Added SPIFI flash driver, algorithms, and docs
authorGeorge Harris <george@luminairecoffee.com>
Fri, 17 Aug 2012 00:53:32 +0000 (17:53 -0700)
committerFreddie Chopin <freddie.chopin@gmail.com>
Wed, 26 Sep 2012 16:17:42 +0000 (16:17 +0000)
Added a flash driver designed to allow program/erase of
memory-mapped SPI flash chips for LPC43xx/LPC18xx family
micros. This driver includes three algorithms - erase,
write, and SPIFI peripheral initialization (to allow
memory-mapped access after a reset). The driver has been
added to the flash driver table (drivers.c), and the
OpenOCD documentation has been updated to include the flash
driver configuration command.

Change-Id: I79f4ff8f1f07de4e5f2fe4f8c23aeb903f868514
Signed-off-by: George Harris <george@luminairecoffee.com>
Reviewed-on: http://openocd.zylin.com/783
Tested-by: jenkins
Reviewed-by: Aurelien Jacobs <aurel@gnuage.org>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
contrib/loaders/flash/lpcspifi_erase.S [new file with mode: 0644]
contrib/loaders/flash/lpcspifi_init.S [new file with mode: 0644]
contrib/loaders/flash/lpcspifi_write.S [new file with mode: 0644]
doc/openocd.texi
src/flash/nor/Makefile.am
src/flash/nor/drivers.c
src/flash/nor/lpcspifi.c [new file with mode: 0644]
tcl/board/lpc4350_spifi_generic.cfg [new file with mode: 0644]

diff --git a/contrib/loaders/flash/lpcspifi_erase.S b/contrib/loaders/flash/lpcspifi_erase.S
new file mode 100644 (file)
index 0000000..219f645
--- /dev/null
@@ -0,0 +1,176 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by George Harris                                   *
+ *   george@luminairecoffee.com                                            *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+       .text
+       .syntax unified
+       .cpu cortex-m3
+       .thumb
+       .thumb_func
+
+/*
+ * Params :
+ * r0 = start address, status (out)
+ * r1 = count
+ * r2 = erase command
+ * r3 = block size
+ */
+
+#define SSP_BASE_HIGH                          0x4008
+#define SSP_BASE_LOW                           0x3000
+#define SSP_CR0_OFFSET                         0x00
+#define SSP_CR1_OFFSET                         0x04
+#define SSP_DATA_OFFSET                        0x08
+#define SSP_CPSR_OFFSET                        0x10
+#define SSP_SR_OFFSET                          0x0c
+
+#define SSP_CLOCK_BASE_HIGH            0x4005
+#define SSP_CLOCK_BASE_LOW                     0x0000
+#define SSP_BRANCH_CLOCK_BASE_HIGH     0x4005
+#define SSP_BRANCH_CLOCK_BASE_LOW      0x2000
+#define SSP_BASE_CLOCK_OFFSET          0x94
+#define SSP_BRANCH_CLOCK_OFFSET                0x700
+
+#define IOCONFIG_BASE_HIGH                     0x4008
+#define IOCONFIG_BASE_LOW                      0x6000
+#define IOCONFIG_SCK_OFFSET                    0x18c
+#define IOCONFIG_HOLD_OFFSET           0x190
+#define IOCONFIG_WP_OFFSET                     0x194
+#define IOCONFIG_MISO_OFFSET           0x198
+#define IOCONFIG_MOSI_OFFSET           0x19c
+#define IOCONFIG_CS_OFFSET                     0x1a0
+
+#define IO_BASE_HIGH                           0x400f
+#define IO_BASE_LOW                            0x4000
+#define IO_CS_OFFSET                           0xab
+#define IODIR_BASE_HIGH                        0x400f
+#define IODIR_BASE_LOW                         0x6000
+#define IO_CS_DIR_OFFSET                       0x14
+
+
+setup: /* Initialize SSP pins and module */
+       mov.w   r10, #IOCONFIG_BASE_LOW
+       movt    r10, #IOCONFIG_BASE_HIGH
+       mov.w   r8, #0xea
+       str.w   r8, [r10, #IOCONFIG_SCK_OFFSET]         /* Configure SCK pin function */
+       mov.w   r8, #0x40
+       str.w   r8, [r10, #IOCONFIG_HOLD_OFFSET]        /* Configure /HOLD pin function */
+       mov.w   r8, #0x40
+       str.w   r8, [r10, #IOCONFIG_WP_OFFSET]          /* Configure /WP pin function */
+       mov.w   r8, #0xed
+       str.w   r8, [r10, #IOCONFIG_MISO_OFFSET]        /* Configure MISO pin function */
+       mov.w   r8, #0xed
+       str.w   r8, [r10, #IOCONFIG_MOSI_OFFSET]        /* Configure MOSI pin function */
+       mov.w   r8, #0x44
+       str.w   r8, [r10, #IOCONFIG_CS_OFFSET]          /* Configure CS pin function */
+
+       mov.w   r10, #IODIR_BASE_LOW
+       movt    r10, #IODIR_BASE_HIGH
+       mov.w   r8, #0x800
+       str     r8, [r10, #IO_CS_DIR_OFFSET]            /* Set CS as output */
+       mov.w   r10, #IO_BASE_LOW
+       movt    r10, #IO_BASE_HIGH
+       mov.w   r8, #0xff
+       str.w   r8, [r10, #IO_CS_OFFSET]                        /* Set CS high */
+
+       mov.w   r10, #SSP_CLOCK_BASE_LOW
+       movt    r10, #SSP_CLOCK_BASE_HIGH
+       mov.w   r8, #0x0000
+       movt    r8, #0x0100
+       str.w   r8, [r10, #SSP_BASE_CLOCK_OFFSET]       /* Configure SSP0 base clock (use 12 MHz IRC) */
+
+       mov.w   r10, #SSP_BRANCH_CLOCK_BASE_LOW
+       movt    r10, #SSP_BRANCH_CLOCK_BASE_HIGH
+       mov.w   r8, #0x01
+       str.w   r8, [r10, #SSP_BRANCH_CLOCK_OFFSET] /* Configure (enable) SSP0 branch clock */
+
+       mov.w   r10, #SSP_BASE_LOW
+       movt    r10, #SSP_BASE_HIGH
+       mov.w   r8, #0x07
+       str.w   r8, [r10, #SSP_CR0_OFFSET]                      /* Set clock postscale */
+       mov.w   r8, #0x02
+       str.w   r8, [r10, #SSP_CPSR_OFFSET]             /* Set clock prescale */
+       str.w   r8, [r10, #SSP_CR1_OFFSET]                      /* Enable SSP in SPI mode */
+write_enable:
+       bl              cs_down
+       mov.w   r9, #0x06               /* Send the write enable command */
+       bl              write_data
+       bl              cs_up
+
+       bl              cs_down
+       mov.w   r9, #0x05               /* Get status register */
+       bl              write_data
+       mov.w   r9, #0x00               /* Dummy data to clock in status */
+       bl              write_data
+       bl              cs_up
+
+       tst     r9, #0x02               /* If the WE bit isn't set, we have a problem. */
+       beq     error
+erase:
+       bl              cs_down
+       mov.w   r9, r2                  /* Send the erase command */
+       bl              write_data
+write_address:
+       lsr     r9, r0, #16     /* Send the current 24-bit write address, MSB first */
+       bl              write_data
+       lsr     r9, r0, #8
+       bl              write_data
+       mov.w   r9, r0
+       bl              write_data
+       bl              cs_up
+wait_flash_busy:                       /* Wait for the flash to finish the previous erase */
+       bl              cs_down
+       mov.w   r9, #0x05               /* Get status register */
+       bl              write_data
+       mov.w   r9, #0x00               /* Dummy data to clock in status */
+       bl              write_data
+       bl              cs_up
+       tst     r9, #0x01               /* If it isn't done, keep waiting */
+       bne     wait_flash_busy
+
+       subs    r1, r1, #1                                      /* decrement count */
+       cbz             r1, exit                                        /* Exit if we have written everything */
+       add     r0, r3                                          /* Move the address up by the block size */
+       b               write_enable                            /* Start a new block erase */
+write_data:                                                    /* Send/receive 1 byte of data over SSP */
+       mov.w   r10, #SSP_BASE_LOW
+       movt    r10, #SSP_BASE_HIGH
+       str.w   r9, [r10, #SSP_DATA_OFFSET]     /* Write supplied data to the SSP data reg */
+wait_transmit:
+       ldr     r9, [r10, #SSP_SR_OFFSET]       /* Check SSP status */
+       tst     r9, #0x0010                                     /* Check if BSY bit is set */
+       bne     wait_transmit                           /* If still transmitting, keep waiting */
+       ldr     r9, [r10, #SSP_DATA_OFFSET]     /* Load received data */
+       bx              lr                                                      /* Exit subroutine */
+cs_up:
+       mov.w   r8, #0xff
+       b               cs_write
+cs_down:
+       mov.w   r8, #0x0000
+cs_write:
+       mov.w   r10, #IO_BASE_LOW
+       movt    r10, #IO_BASE_HIGH
+       str.w   r8, [r10, #IO_CS_OFFSET]
+       bx              lr
+error:
+       movs    r0, #0
+exit:
+       bkpt    #0x00
+
+       .end
diff --git a/contrib/loaders/flash/lpcspifi_init.S b/contrib/loaders/flash/lpcspifi_init.S
new file mode 100644 (file)
index 0000000..1b373a1
--- /dev/null
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by George Harris                                          *
+ *   george@luminairecoffee.com                                            *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+/***************************************************************************
+*      This is an algorithm for the LPC43xx family (and probably the LPC18xx  *
+*      family as well, though they have not been tested) that will initialize *
+*      memory-mapped SPI flash accesses. Unfortunately NXP has published      *
+*      neither the ROM source code that performs this initialization nor the  *
+*      register descriptions necessary to do so, so this code is necessary to *
+*      call into the ROM SPIFI API.                                           *
+***************************************************************************/
+
+       .text
+       .syntax unified
+       .arch armv7-m
+       .thumb
+       .thumb_func
+
+       .align 2
+
+/*
+ * Params :
+ * r0 = spifi clock speed
+ */
+
+#define IOCONFIG_BASE_HIGH          0x4008
+#define IOCONFIG_BASE_LOW           0x6000
+#define IOCONFIG_SCK_OFFSET         0x18c
+#define IOCONFIG_HOLD_OFFSET        0x190
+#define IOCONFIG_WP_OFFSET          0x194
+#define IOCONFIG_MISO_OFFSET        0x198
+#define IOCONFIG_MOSI_OFFSET        0x19c
+#define IOCONFIG_CS_OFFSET          0x1a0
+
+#define SPIFI_ROM_TABLE_BASE_HIGH   0x1040
+#define SPIFI_ROM_TABLE_BASE_LOW    0x0118
+
+code:
+       mov.w   r8, r0
+       sub             sp, #0x84
+       add             r7, sp, #0x0
+       /* Initialize SPIFI pins */
+       mov.w   r3, #IOCONFIG_BASE_LOW
+       movt    r3, #IOCONFIG_BASE_HIGH
+       mov.w   r2, #0xf3
+       str.w   r2, [r3, #IOCONFIG_SCK_OFFSET]
+       mov.w   r3, #IOCONFIG_BASE_LOW
+       movt    r3, #IOCONFIG_BASE_HIGH
+       mov.w   r2, #IOCONFIG_BASE_LOW
+       movt    r2, #IOCONFIG_BASE_HIGH
+       mov.w   r1, #IOCONFIG_BASE_LOW
+       movt    r1, #IOCONFIG_BASE_HIGH
+       mov.w   r0, #IOCONFIG_BASE_LOW
+       movt    r0, #IOCONFIG_BASE_HIGH
+       mov.w   r4, #0xd3
+       str.w   r4, [r0, #IOCONFIG_MOSI_OFFSET]
+       mov     r0, r4
+       str.w   r0, [r1, #IOCONFIG_MISO_OFFSET]
+       mov     r1, r0
+       str.w   r1, [r2, #IOCONFIG_WP_OFFSET]
+       str.w   r1, [r3, #IOCONFIG_HOLD_OFFSET]
+       mov.w   r3, #IOCONFIG_BASE_LOW
+       movt    r3, #IOCONFIG_BASE_HIGH
+       mov.w   r2, #0x13
+       str.w   r2, [r3, #IOCONFIG_CS_OFFSET]
+
+       /* Perform SPIFI init. See spifi_rom_api.h (in NXP lpc43xx driver package) for details */
+       /* on initialization arguments. */
+       movw    r3, #SPIFI_ROM_TABLE_BASE_LOW      /* The ROM API table is located @ 0x10400118, and                    */
+       movt    r3, #SPIFI_ROM_TABLE_BASE_HIGH     /* the first pointer in the struct is to the init function. */
+       ldr     r3, [r3, #0x0]
+       ldr     r4, [r3, #0x0]                           /* Grab the init function pointer from the table */
+       /* Set up function arguments */
+       movw    r0, #0x3b4
+       movt    r0, #0x1000                                   /* Pointer to a SPIFI data struct that we don't care about */
+       mov.w   r1, #0x3                        /* "csHigh". Not 100% sure what this does. */
+       mov.w   r2, #0xc0                                     /* The configuration word: S_RCVCLOCK | S_FULLCLK */
+       mov.w   r3, r8                                        /* SPIFI clock speed (12MHz) */
+       blx     r4                                                          /* Call the init function */
+       b               done
+
+done:
+       bkpt    #0
+
+       .end
diff --git a/contrib/loaders/flash/lpcspifi_write.S b/contrib/loaders/flash/lpcspifi_write.S
new file mode 100644 (file)
index 0000000..4292a37
--- /dev/null
@@ -0,0 +1,210 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by George Harris                                   *
+ *   george@luminairecoffee.com                                            *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+       .text
+       .syntax unified
+       .cpu cortex-m3
+       .thumb
+       .thumb_func
+
+/*
+ * Params :
+ * r0 = workarea start, status (out)
+ * r1 = workarea end
+ * r2 = target address (offset from flash base)
+ * r3 = count (bytes)
+ * r4 = page size
+ * Clobbered:
+ * r7 - rp
+ * r8 - wp, tmp
+ * r9 - send/receive data
+ * r10 - temp
+ * r11 - current page end address
+ */
+
+#define SSP_BASE_HIGH                          0x4008
+#define SSP_BASE_LOW                           0x3000
+#define SSP_CR0_OFFSET                         0x00
+#define SSP_CR1_OFFSET                         0x04
+#define SSP_DATA_OFFSET                        0x08
+#define SSP_CPSR_OFFSET                        0x10
+#define SSP_SR_OFFSET                          0x0c
+
+#define SSP_CLOCK_BASE_HIGH            0x4005
+#define SSP_CLOCK_BASE_LOW                     0x0000
+#define SSP_BRANCH_CLOCK_BASE_HIGH     0x4005
+#define SSP_BRANCH_CLOCK_BASE_LOW      0x2000
+#define SSP_BASE_CLOCK_OFFSET          0x94
+#define SSP_BRANCH_CLOCK_OFFSET                0x700
+
+#define IOCONFIG_BASE_HIGH                     0x4008
+#define IOCONFIG_BASE_LOW                      0x6000
+#define IOCONFIG_SCK_OFFSET                    0x18c
+#define IOCONFIG_HOLD_OFFSET           0x190
+#define IOCONFIG_WP_OFFSET                     0x194
+#define IOCONFIG_MISO_OFFSET           0x198
+#define IOCONFIG_MOSI_OFFSET           0x19c
+#define IOCONFIG_CS_OFFSET                     0x1a0
+
+#define IO_BASE_HIGH                           0x400f
+#define IO_BASE_LOW                            0x4000
+#define IO_CS_OFFSET                           0xab
+#define IODIR_BASE_HIGH                        0x400f
+#define IODIR_BASE_LOW                         0x6000
+#define IO_CS_DIR_OFFSET                       0x14
+
+
+setup: /* Initialize SSP pins and module */
+       mov.w   r10, #IOCONFIG_BASE_LOW
+       movt    r10, #IOCONFIG_BASE_HIGH
+       mov.w   r8, #0xea
+       str.w   r8, [r10, #IOCONFIG_SCK_OFFSET]         /* Configure SCK pin function */
+       mov.w   r8, #0x40
+       str.w   r8, [r10, #IOCONFIG_HOLD_OFFSET]        /* Configure /HOLD pin function */
+       mov.w   r8, #0x40
+       str.w   r8, [r10, #IOCONFIG_WP_OFFSET]          /* Configure /WP pin function */
+       mov.w   r8, #0xed
+       str.w   r8, [r10, #IOCONFIG_MISO_OFFSET]        /* Configure MISO pin function */
+       mov.w   r8, #0xed
+       str.w   r8, [r10, #IOCONFIG_MOSI_OFFSET]        /* Configure MOSI pin function */
+       mov.w   r8, #0x44
+       str.w   r8, [r10, #IOCONFIG_CS_OFFSET]          /* Configure CS pin function */
+
+       mov.w   r10, #IODIR_BASE_LOW
+       movt    r10, #IODIR_BASE_HIGH
+       mov.w   r8, #0x800
+       str     r8, [r10, #IO_CS_DIR_OFFSET]            /* Set CS as output */
+       mov.w   r10, #IO_BASE_LOW
+       movt    r10, #IO_BASE_HIGH
+       mov.w   r8, #0xff
+       str.w   r8, [r10, #IO_CS_OFFSET]                        /* Set CS high */
+
+       mov.w   r10, #SSP_CLOCK_BASE_LOW
+       movt    r10, #SSP_CLOCK_BASE_HIGH
+       mov.w   r8, #0x0000
+       movt    r8, #0x0100
+       str.w   r8, [r10, #SSP_BASE_CLOCK_OFFSET]       /* Configure SSP0 base clock (use 12 MHz IRC) */
+
+       mov.w   r10, #SSP_BRANCH_CLOCK_BASE_LOW
+       movt    r10, #SSP_BRANCH_CLOCK_BASE_HIGH
+       mov.w   r8, #0x01
+       str.w   r8, [r10, #SSP_BRANCH_CLOCK_OFFSET] /* Configure (enable) SSP0 branch clock */
+
+       mov.w   r10, #SSP_BASE_LOW
+       movt    r10, #SSP_BASE_HIGH
+       mov.w   r8, #0x07
+       str.w   r8, [r10, #SSP_CR0_OFFSET]                      /* Set clock postscale */
+       mov.w   r8, #0x02
+       str.w   r8, [r10, #SSP_CPSR_OFFSET]             /* Set clock prescale */
+       str.w   r8, [r10, #SSP_CR1_OFFSET]                      /* Enable SSP in SPI mode */
+
+       mov.w   r11, #0x00
+find_next_page_boundary:
+       add     r11, r4                 /* Increment to the next page */
+       cmp     r11, r2
+       /* If we have not reached the next page boundary after the target address, keep going */
+       bls     find_next_page_boundary
+write_enable:
+       bl              cs_down
+       mov.w   r9, #0x06               /* Send the write enable command */
+       bl              write_data
+       bl              cs_up
+
+       bl              cs_down
+       mov.w   r9, #0x05               /* Get status register */
+       bl              write_data
+       mov.w   r9, #0x00               /* Dummy data to clock in status */
+       bl              write_data
+       bl              cs_up
+
+       tst     r9, #0x02               /* If the WE bit isn't set, we have a problem. */
+       beq     error
+page_program:
+       bl              cs_down
+       mov.w   r9, #0x02               /* Send the page program command */
+       bl              write_data
+write_address:
+       lsr     r9, r2, #16     /* Send the current 24-bit write address, MSB first */
+       bl              write_data
+       lsr     r9, r2, #8
+       bl              write_data
+       mov.w   r9, r2
+       bl              write_data
+wait_fifo:
+       ldr     r8, [r0]                /* read the write pointer */
+       cmp     r8, #0                  /* if it's zero, we're gonzo */
+       beq     exit
+       ldr     r7, [r0, #4]    /* read the read pointer */
+       cmp     r7, r8                  /* wait until they are not equal */
+       beq     wait_fifo
+write:
+       ldrb    r9, [r7], #0x01 /* Load one byte from the FIFO, increment the read pointer by 1 */
+       bl              write_data              /* send the byte to the flash chip */
+
+       cmp     r7, r1                  /* wrap the read pointer if it is at the end */
+       it      cs
+       addcs   r7, r0, #8              /* skip loader args */
+       str     r7, [r0, #4]    /* store the new read pointer */
+       subs    r3, r3, #1              /* decrement count */
+       cbz             r3, exit                /* Exit if we have written everything */
+
+       add     r2, #1                  /* Increment flash address by 1 */
+       cmp     r11, r2                 /* See if we have reached the end of a page */
+       bne     wait_fifo               /* If not, keep writing bytes */
+       bl              cs_up                   /* Otherwise, end the command and keep going w/ the next page */
+       add     r11, r4                 /* Move up the end-of-page address by the page size*/
+wait_flash_busy:                       /* Wait for the flash to finish the previous page write */
+       bl              cs_down
+       mov.w   r9, #0x05                                       /* Get status register */
+       bl              write_data
+       mov.w   r9, #0x00                                       /* Dummy data to clock in status */
+       bl              write_data
+       bl              cs_up
+       tst     r9, #0x01                                       /* If it isn't done, keep waiting */
+       bne     wait_flash_busy
+       b               write_enable                            /* If it is done, start a new page write */
+write_data:                                                    /* Send/receive 1 byte of data over SSP */
+       mov.w   r10, #SSP_BASE_LOW
+       movt    r10, #SSP_BASE_HIGH
+       str.w   r9, [r10, #SSP_DATA_OFFSET]     /* Write supplied data to the SSP data reg */
+wait_transmit:
+       ldr     r9, [r10, #SSP_SR_OFFSET]       /* Check SSP status */
+       tst     r9, #0x0010                                     /* Check if BSY bit is set */
+       bne     wait_transmit                           /* If still transmitting, keep waiting */
+       ldr     r9, [r10, #SSP_DATA_OFFSET]     /* Load received data */
+       bx              lr                                                      /* Exit subroutine */
+cs_up:
+       mov.w   r8, #0xff
+       b               cs_write
+cs_down:
+       mov.w   r8, #0x0000
+cs_write:
+       mov.w   r10, #IO_BASE_LOW
+       movt    r10, #IO_BASE_HIGH
+       str.w   r8, [r10, #IO_CS_OFFSET]
+       bx              lr
+error:
+       movs    r0, #0
+       str     r0, [r2, #4]    /* set rp = 0 on error */
+exit:
+       mov     r0, r6
+       bkpt    #0x00
+
+       .end
index 1604e9c..e663557 100644 (file)
@@ -4652,6 +4652,30 @@ flash bank $_FLASHNAME cfi 0x00000000 0x02000000 2 4 $_TARGETNAME
 @c "cfi part_id" disabled
 @end deffn
 
+@deffn {Flash Driver} lpcspifi
+@cindex NXP SPI Flash Interface
+@cindex SPIFI
+@cindex lpcspifi
+NXP's LPC43xx and LPC18xx families include a proprietary SPI
+Flash Interface (SPIFI) peripheral that can drive and provide
+memory mapped access to external SPI flash devices.
+
+The lpcspifi driver initializes this interface and provides
+program and erase functionality for these serial flash devices.
+Use of this driver @b{requires} a working area of at least 1kB
+to be configured on the target device; more than this will
+significantly reduce flash programming times.
+
+The setup command only requires the @var{base} parameter. All
+other parameters are ignored, and the flash size and layout
+are configured by the driver.
+
+@example
+flash bank $_FLASHNAME lpcspifi 0x14000000 0 0 0 $_TARGETNAME
+@end example
+
+@end deffn
+
 @deffn {Flash Driver} stmsmi
 @cindex STMicroelectronics Serial Memory Interface
 @cindex SMI
index d26aa20..c344cd0 100644 (file)
@@ -19,6 +19,7 @@ NOR_DRIVERS = \
        lpc2000.c \
        lpc288x.c \
        lpc2900.c \
+       lpcspifi.c \
        non_cfi.c \
        ocl.c \
        pic32mx.c \
index 69c3387..61a5d33 100644 (file)
@@ -25,6 +25,7 @@
 extern struct flash_driver lpc2000_flash;
 extern struct flash_driver lpc288x_flash;
 extern struct flash_driver lpc2900_flash;
+extern struct flash_driver lpcspifi_flash;
 extern struct flash_driver cfi_flash;
 extern struct flash_driver at91sam3_flash;
 extern struct flash_driver at91sam4_flash;
@@ -57,6 +58,7 @@ static struct flash_driver *flash_drivers[] = {
        &lpc2000_flash,
        &lpc288x_flash,
        &lpc2900_flash,
+       &lpcspifi_flash,
        &cfi_flash,
        &at91sam7_flash,
        &at91sam3_flash,
diff --git a/src/flash/nor/lpcspifi.c b/src/flash/nor/lpcspifi.c
new file mode 100644 (file)
index 0000000..757d6d1
--- /dev/null
@@ -0,0 +1,968 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by George Harris                                   *
+ *   george@luminairecoffee.com                                            *
+ *                                                                                                                                                *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imp.h"
+#include "spi.h"
+#include <jtag/jtag.h>
+#include <helper/time_support.h>
+#include <target/algorithm.h>
+#include <target/armv7m.h>
+
+/* Offsets from ssp_base into config & data registers */
+#define SSP_CR0                (0x00)  /* Control register 0 */
+#define SSP_CR1                (0x04)  /* Control register 1 */
+#define SSP_DATA       (0x08)  /* Data register (TX and RX) */
+#define SSP_SR         (0x0C)  /* Status register */
+#define SSP_CPSR       (0x10)  /* Clock prescale register */
+
+/* Status register fields */
+#define SSP_BSY                (0x00000010)
+
+/* Timeout in ms */
+#define SSP_CMD_TIMEOUT   (100)
+#define SSP_PROBE_TIMEOUT (100)
+#define SSP_MAX_TIMEOUT  (3000)
+
+struct lpcspifi_flash_bank {
+       int probed;
+       uint32_t ssp_base;
+       uint32_t io_base;
+       uint32_t ioconfig_base;
+       uint32_t bank_num;
+       uint32_t max_spi_clock_mhz;
+       struct flash_device *dev;
+};
+
+struct lpcspifi_target {
+       char *name;
+       uint32_t tap_idcode;
+       uint32_t spifi_base;
+       uint32_t ssp_base;
+       uint32_t io_base;
+       uint32_t ioconfig_base; /* base address for the port word pin registers */
+};
+
+static struct lpcspifi_target target_devices[] = {
+       /* name,          tap_idcode, spifi_base, ssp_base,   io_base,    ioconfig_base */
+       { "LPC43xx/18xx", 0x4ba00477, 0x14000000, 0x40083000, 0x400F4000, 0x40086000 },
+       { NULL,           0,          0,          0,          0,          0 }
+};
+
+/* flash_bank lpcspifi <base> <size> <chip_width> <bus_width> <target>
+ */
+FLASH_BANK_COMMAND_HANDLER(lpcspifi_flash_bank_command)
+{
+       struct lpcspifi_flash_bank *lpcspifi_info;
+
+       if (CMD_ARGC < 6)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+
+       lpcspifi_info = malloc(sizeof(struct lpcspifi_flash_bank));
+       if (lpcspifi_info == NULL) {
+               LOG_ERROR("not enough memory");
+               return ERROR_FAIL;
+       }
+
+       bank->driver_priv = lpcspifi_info;
+       lpcspifi_info->probed = 0;
+
+       return ERROR_OK;
+}
+
+static inline int ioconfig_write_reg(struct target *target, uint32_t ioconfig_base, uint32_t offset, uint32_t value)
+{
+       return target_write_u32(target, ioconfig_base + offset, value);
+}
+
+static inline int ssp_write_reg(struct target *target, uint32_t ssp_base, uint32_t offset, uint32_t value)
+{
+       return target_write_u32(target, ssp_base + offset, value);
+}
+
+static inline int io_write_reg(struct target *target, uint32_t io_base, uint32_t offset, uint32_t value)
+{
+       return target_write_u32(target, io_base + offset, value);
+}
+
+static inline int ssp_read_reg(struct target *target, uint32_t ssp_base, uint32_t offset, uint32_t *value)
+{
+       return target_read_u32(target, ssp_base + offset, value);
+}
+
+static int ssp_setcs(struct target *target, uint32_t io_base, unsigned int value)
+{
+       return io_write_reg(target, io_base, 0x12ac, value ? 0xffffffff : 0x00000000);
+}
+
+/* Poll the SSP busy flag. When this comes back as 0, the transfer is complete
+ * and the controller is idle. */
+static int poll_ssp_busy(struct target *target, uint32_t ssp_base, int timeout)
+{
+       long long endtime;
+       uint32_t value;
+       int retval;
+
+       retval = ssp_read_reg(target, ssp_base, SSP_SR, &value);
+       if ((retval == ERROR_OK) && (value & SSP_BSY) == 0)
+               return ERROR_OK;
+       else if (retval != ERROR_OK)
+               return retval;
+
+       endtime = timeval_ms() + timeout;
+       do {
+               alive_sleep(1);
+               retval = ssp_read_reg(target, ssp_base, SSP_SR, &value);
+               if ((retval == ERROR_OK) && (value & SSP_BSY) == 0)
+                       return ERROR_OK;
+               else if (retval != ERROR_OK)
+                       return retval;
+       } while (timeval_ms() < endtime);
+
+       LOG_ERROR("Timeout while polling BSY");
+       return ERROR_FLASH_OPERATION_FAILED;
+}
+
+/* Un-initialize the ssp module and initialize the SPIFI module */
+static int lpcspifi_set_hw_mode(struct flash_bank *bank)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       struct armv7m_algorithm armv7m_info;
+       struct working_area *spifi_init_algorithm;
+       struct reg_param reg_params[1];
+       int retval = ERROR_OK;
+
+       LOG_DEBUG("Uninitializing LPC43xx SSP");
+       /* Turn off the SSP module */
+       retval = ssp_write_reg(target, ssp_base, SSP_CR1, 0x00000000);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* see contrib/loaders/flash/lpcspifi_init.S for src */
+       static const uint8_t spifi_init_code[] = {
+               0x4f, 0xea, 0x00, 0x08, 0xa1, 0xb0, 0x00, 0xaf,
+               0x4f, 0xf4, 0xc0, 0x43, 0xc4, 0xf2, 0x08, 0x03,
+               0x4f, 0xf0, 0xf3, 0x02, 0xc3, 0xf8, 0x8c, 0x21,
+               0x4f, 0xf4, 0xc0, 0x43, 0xc4, 0xf2, 0x08, 0x03,
+               0x4f, 0xf4, 0xc0, 0x42, 0xc4, 0xf2, 0x08, 0x02,
+               0x4f, 0xf4, 0xc0, 0x41, 0xc4, 0xf2, 0x08, 0x01,
+               0x4f, 0xf4, 0xc0, 0x40, 0xc4, 0xf2, 0x08, 0x00,
+               0x4f, 0xf0, 0xd3, 0x04, 0xc0, 0xf8, 0x9c, 0x41,
+               0x20, 0x46, 0xc1, 0xf8, 0x98, 0x01, 0x01, 0x46,
+               0xc2, 0xf8, 0x94, 0x11, 0xc3, 0xf8, 0x90, 0x11,
+               0x4f, 0xf4, 0xc0, 0x43, 0xc4, 0xf2, 0x08, 0x03,
+               0x4f, 0xf0, 0x13, 0x02, 0xc3, 0xf8, 0xa0, 0x21,
+               0x40, 0xf2, 0x18, 0x13, 0xc1, 0xf2, 0x40, 0x03,
+               0x1b, 0x68, 0x1c, 0x68, 0x40, 0xf2, 0xb4, 0x30,
+               0xc1, 0xf2, 0x00, 0x00, 0x4f, 0xf0, 0x03, 0x01,
+               0x4f, 0xf0, 0xc0, 0x02, 0x4f, 0xea, 0x08, 0x03,
+               0xa0, 0x47, 0x00, 0xf0, 0x00, 0xb8, 0x00, 0xbe
+       };
+
+       armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+       armv7m_info.core_mode = ARMV7M_MODE_ANY;
+
+
+       LOG_DEBUG("Allocating working area for SPIFI init algorithm");
+       /* Get memory for spifi initialization algorithm */
+       retval = target_alloc_working_area(target, sizeof(spifi_init_code),
+               &spifi_init_algorithm);
+       if (retval != ERROR_OK) {
+               LOG_ERROR("Insufficient working area to initialize SPIFI "\
+                       "module. You must allocate at least %zdB of working "\
+                       "area in order to use this driver.",
+                       sizeof(spifi_init_code)
+               );
+
+               return retval;
+       }
+
+       LOG_DEBUG("Writing algorithm to working area at 0x%08x",
+               spifi_init_algorithm->address);
+       /* Write algorithm to working area */
+       retval = target_write_buffer(target,
+               spifi_init_algorithm->address,
+               sizeof(spifi_init_code),
+               spifi_init_code
+       );
+
+       if (retval != ERROR_OK) {
+               target_free_working_area(target, spifi_init_algorithm);
+               return retval;
+       }
+
+       init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);            /* spifi clk speed */
+
+       /* For now, the algorithm will set up the SPIFI module
+        * @ the IRC clock speed. In the future, it could be made
+        * a bit smarter to use other clock sources if the user has
+        * already configured them in order to speed up memory-
+        * mapped reads. */
+       buf_set_u32(reg_params[0].value, 0, 32, 12);
+
+       /* Run the algorithm */
+       LOG_DEBUG("Running SPIFI init algorithm");
+       retval = target_run_algorithm(target, 0 , NULL, 1, reg_params,
+               spifi_init_algorithm->address,
+               spifi_init_algorithm->address + sizeof(spifi_init_code) - 2,
+               1000, &armv7m_info);
+
+       if (retval != ERROR_OK)
+               LOG_ERROR("Error executing SPIFI init algorithm");
+
+       target_free_working_area(target, spifi_init_algorithm);
+
+       destroy_reg_param(&reg_params[0]);
+
+       return retval;
+}
+
+/* Initialize the ssp module */
+static int lpcspifi_set_sw_mode(struct flash_bank *bank)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       uint32_t io_base = lpcspifi_info->io_base;
+       uint32_t ioconfig_base = lpcspifi_info->ioconfig_base;
+       int retval = ERROR_OK;
+
+       /* Re-initialize SPIFI. There are a couple of errata on this, so this makes
+       sure that nothing's in an unhappy state. */
+       retval = lpcspifi_set_hw_mode(bank);
+
+       /* If we couldn't initialize hardware mode, don't even bother continuing */
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* Initialize the pins */
+       retval = ioconfig_write_reg(target, ioconfig_base, 0x194, 0x00000040);
+       if (retval == ERROR_OK)
+               retval = ioconfig_write_reg(target, ioconfig_base, 0x1a0, 0x00000044);
+       if (retval == ERROR_OK)
+               retval = ioconfig_write_reg(target, ioconfig_base, 0x190, 0x00000040);
+       if (retval == ERROR_OK)
+               retval = ioconfig_write_reg(target, ioconfig_base, 0x19c, 0x000000ed);
+       if (retval == ERROR_OK)
+               retval = ioconfig_write_reg(target, ioconfig_base, 0x198, 0x000000ed);
+       if (retval == ERROR_OK)
+               retval = ioconfig_write_reg(target, ioconfig_base, 0x18c, 0x000000ea);
+
+       /* Set CS high & as an output */
+       if (retval == ERROR_OK)
+               retval = io_write_reg(target, io_base, 0x12ac, 0xffffffff);
+       if (retval == ERROR_OK)
+               retval = io_write_reg(target, io_base, 0x2014, 0x00000800);
+
+       /* Initialize the module */
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_CR0, 0x00000007);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_CR1, 0x00000000);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_CPSR, 0x00000008);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_CR1, 0x00000002);
+
+       /* If something didn't work out, attempt to return SPIFI to HW mode */
+       if (retval != ERROR_OK)
+               lpcspifi_set_hw_mode(bank);
+
+       return retval;
+}
+
+/* Read the status register of the external SPI flash chip. */
+static int read_status_reg(struct flash_bank *bank, uint32_t *status)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       uint32_t io_base = lpcspifi_info->io_base;
+       uint32_t value;
+       int retval = ERROR_OK;
+
+       retval = ssp_setcs(target, io_base, 0);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, SPIFLASH_READ_STATUS);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       /* Dummy write to clock in the register */
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, 0x00);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_setcs(target, io_base, 1);
+
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               *status = value;
+
+       return retval;
+}
+
+/* check for BSY bit in flash status register */
+/* timeout in ms */
+static int wait_till_ready(struct flash_bank *bank, int timeout)
+{
+       uint32_t status;
+       int retval;
+       long long endtime;
+
+       endtime = timeval_ms() + timeout;
+       do {
+               /* read flash status register */
+               retval = read_status_reg(bank, &status);
+               if (retval != ERROR_OK)
+                       return retval;
+
+               if ((status & SPIFLASH_BSY_BIT) == 0)
+                       return ERROR_OK;
+               alive_sleep(1);
+       } while (timeval_ms() < endtime);
+
+       LOG_ERROR("timeout waiting for flash to finish write/erase operation");
+       return ERROR_FAIL;
+}
+
+/* Send "write enable" command to SPI flash chip. */
+static int lpcspifi_write_enable(struct flash_bank *bank)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       uint32_t io_base = lpcspifi_info->io_base;
+       uint32_t status, value;
+       int retval = ERROR_OK;
+
+       retval = ssp_setcs(target, io_base, 0);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, SPIFLASH_WRITE_ENABLE);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               retval = ssp_setcs(target, io_base, 1);
+
+       /* read flash status register */
+       if (retval == ERROR_OK)
+               retval = read_status_reg(bank, &status);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* Check write enabled */
+       if ((status & SPIFLASH_WE_BIT) == 0) {
+               LOG_ERROR("Cannot enable write to flash. Status=0x%08" PRIx32, status);
+               return ERROR_FAIL;
+       }
+
+       return retval;
+}
+
+static int lpcspifi_bulk_erase(struct flash_bank *bank)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       uint32_t io_base = lpcspifi_info->io_base;
+       uint32_t value;
+       int retval = ERROR_OK;
+
+       retval = lpcspifi_set_sw_mode(bank);
+
+       if (retval == ERROR_OK)
+               retval = lpcspifi_write_enable(bank);
+
+       /* send SPI command "bulk erase" */
+       if (retval == ERROR_OK)
+               ssp_setcs(target, io_base, 0);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, lpcspifi_info->dev->chip_erase_cmd);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               retval = ssp_setcs(target, io_base, 1);
+
+       /* poll flash BSY for self-timed bulk erase */
+       if (retval == ERROR_OK)
+               retval = wait_till_ready(bank, bank->num_sectors*SSP_MAX_TIMEOUT);
+
+       return retval;
+}
+
+static int lpcspifi_erase(struct flash_bank *bank, int first, int last)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       struct reg_param reg_params[4];
+       struct armv7m_algorithm armv7m_info;
+       struct working_area *erase_algorithm;
+       int retval = ERROR_OK;
+       int sector;
+
+       LOG_DEBUG("erase from sector %d to sector %d", first, last);
+
+       if (target->state != TARGET_HALTED) {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       if ((first < 0) || (last < first) || (last >= bank->num_sectors)) {
+               LOG_ERROR("Flash sector invalid");
+               return ERROR_FLASH_SECTOR_INVALID;
+       }
+
+       if (!(lpcspifi_info->probed)) {
+               LOG_ERROR("Flash bank not probed");
+               return ERROR_FLASH_BANK_NOT_PROBED;
+       }
+
+       for (sector = first; sector <= last; sector++) {
+               if (bank->sectors[sector].is_protected) {
+                       LOG_ERROR("Flash sector %d protected", sector);
+                       return ERROR_FAIL;
+               }
+       }
+
+       /* If we're erasing the entire chip and the flash supports
+        * it, use a bulk erase instead of going sector-by-sector. */
+       if (first == 0 && last == (bank->num_sectors - 1)
+               && lpcspifi_info->dev->chip_erase_cmd != lpcspifi_info->dev->erase_cmd) {
+               LOG_DEBUG("Chip supports the bulk erase command."\
+               " Will use bulk erase instead of sector-by-sector erase.");
+               retval = lpcspifi_bulk_erase(bank);
+
+               if (retval == ERROR_OK) {
+                       retval = lpcspifi_set_hw_mode(bank);
+                       return retval;
+               } else
+                       LOG_WARNING("Bulk flash erase failed. Falling back to sector-by-sector erase.");
+       }
+
+       retval = lpcspifi_set_hw_mode(bank);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* see contrib/loaders/flash/lpcspifi_erase.S for src */
+       static const uint8_t lpcspifi_flash_erase_code[] = {
+               0x4f, 0xf4, 0xc0, 0x4a, 0xc4, 0xf2, 0x08, 0x0a,
+               0x4f, 0xf0, 0xea, 0x08, 0xca, 0xf8, 0x8c, 0x81,
+               0x4f, 0xf0, 0x40, 0x08, 0xca, 0xf8, 0x90, 0x81,
+               0x4f, 0xf0, 0x40, 0x08, 0xca, 0xf8, 0x94, 0x81,
+               0x4f, 0xf0, 0xed, 0x08, 0xca, 0xf8, 0x98, 0x81,
+               0x4f, 0xf0, 0xed, 0x08, 0xca, 0xf8, 0x9c, 0x81,
+               0x4f, 0xf0, 0x44, 0x08, 0xca, 0xf8, 0xa0, 0x81,
+               0x4f, 0xf4, 0xc0, 0x4a, 0xc4, 0xf2, 0x0f, 0x0a,
+               0x4f, 0xf4, 0x00, 0x68, 0xca, 0xf8, 0x14, 0x80,
+               0x4f, 0xf4, 0x80, 0x4a, 0xc4, 0xf2, 0x0f, 0x0a,
+               0x4f, 0xf0, 0xff, 0x08, 0xca, 0xf8, 0xab, 0x80,
+               0x4f, 0xf0, 0x00, 0x0a, 0xc4, 0xf2, 0x05, 0x0a,
+               0x4f, 0xf0, 0x00, 0x08, 0xc0, 0xf2, 0x00, 0x18,
+               0xca, 0xf8, 0x94, 0x80, 0x4f, 0xf4, 0x00, 0x5a,
+               0xc4, 0xf2, 0x05, 0x0a, 0x4f, 0xf0, 0x01, 0x08,
+               0xca, 0xf8, 0x00, 0x87, 0x4f, 0xf4, 0x40, 0x5a,
+               0xc4, 0xf2, 0x08, 0x0a, 0x4f, 0xf0, 0x07, 0x08,
+               0xca, 0xf8, 0x00, 0x80, 0x4f, 0xf0, 0x02, 0x08,
+               0xca, 0xf8, 0x10, 0x80, 0xca, 0xf8, 0x04, 0x80,
+               0x00, 0xf0, 0x52, 0xf8, 0x4f, 0xf0, 0x06, 0x09,
+               0x00, 0xf0, 0x3b, 0xf8, 0x00, 0xf0, 0x48, 0xf8,
+               0x00, 0xf0, 0x4a, 0xf8, 0x4f, 0xf0, 0x05, 0x09,
+               0x00, 0xf0, 0x33, 0xf8, 0x4f, 0xf0, 0x00, 0x09,
+               0x00, 0xf0, 0x2f, 0xf8, 0x00, 0xf0, 0x3c, 0xf8,
+               0x19, 0xf0, 0x02, 0x0f, 0x00, 0xf0, 0x45, 0x80,
+               0x00, 0xf0, 0x3a, 0xf8, 0x4f, 0xea, 0x02, 0x09,
+               0x00, 0xf0, 0x23, 0xf8, 0x4f, 0xea, 0x10, 0x49,
+               0x00, 0xf0, 0x1f, 0xf8, 0x4f, 0xea, 0x10, 0x29,
+               0x00, 0xf0, 0x1b, 0xf8, 0x4f, 0xea, 0x00, 0x09,
+               0x00, 0xf0, 0x17, 0xf8, 0x00, 0xf0, 0x24, 0xf8,
+               0x00, 0xf0, 0x26, 0xf8, 0x4f, 0xf0, 0x05, 0x09,
+               0x00, 0xf0, 0x0f, 0xf8, 0x4f, 0xf0, 0x00, 0x09,
+               0x00, 0xf0, 0x0b, 0xf8, 0x00, 0xf0, 0x18, 0xf8,
+               0x19, 0xf0, 0x01, 0x0f, 0x7f, 0xf4, 0xf0, 0xaf,
+               0x01, 0x39, 0xf9, 0xb1, 0x18, 0x44, 0xff, 0xf7,
+               0xbf, 0xbf, 0x4f, 0xf4, 0x40, 0x5a, 0xc4, 0xf2,
+               0x08, 0x0a, 0xca, 0xf8, 0x08, 0x90, 0xda, 0xf8,
+               0x0c, 0x90, 0x19, 0xf0, 0x10, 0x0f, 0x7f, 0xf4,
+               0xfa, 0xaf, 0xda, 0xf8, 0x08, 0x90, 0x70, 0x47,
+               0x4f, 0xf0, 0xff, 0x08, 0x00, 0xf0, 0x02, 0xb8,
+               0x4f, 0xf0, 0x00, 0x08, 0x4f, 0xf4, 0x80, 0x4a,
+               0xc4, 0xf2, 0x0f, 0x0a, 0xca, 0xf8, 0xab, 0x80,
+               0x70, 0x47, 0x00, 0x20, 0x00, 0xbe, 0xff, 0xff
+       };
+
+       armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+       armv7m_info.core_mode = ARMV7M_MODE_ANY;
+
+
+       /* Get memory for spifi initialization algorithm */
+       retval = target_alloc_working_area(target, sizeof(lpcspifi_flash_erase_code),
+               &erase_algorithm);
+       if (retval != ERROR_OK) {
+               LOG_ERROR("Insufficient working area. You must configure a working"\
+                       " area of at least %zdB in order to erase SPIFI flash.",
+                       sizeof(lpcspifi_flash_erase_code));
+               return retval;
+       }
+
+       /* Write algorithm to working area */
+       retval = target_write_buffer(target, erase_algorithm->address,
+               sizeof(lpcspifi_flash_erase_code), lpcspifi_flash_erase_code);
+       if (retval != ERROR_OK) {
+               target_free_working_area(target, erase_algorithm);
+               return retval;
+       }
+
+       init_reg_param(&reg_params[0], "r0", 32, PARAM_IN_OUT); /* Start address */
+       init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);    /* Sector count */
+       init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);    /* Erase command */
+       init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);    /* Sector size */
+
+       buf_set_u32(reg_params[0].value, 0, 32, bank->sectors[first].offset);
+       buf_set_u32(reg_params[1].value, 0, 32, last - first + 1);
+       buf_set_u32(reg_params[2].value, 0, 32, lpcspifi_info->dev->erase_cmd);
+       buf_set_u32(reg_params[3].value, 0, 32, bank->sectors[first].size);
+
+       /* Run the algorithm */
+       retval = target_run_algorithm(target, 0 , NULL, 4, reg_params,
+               erase_algorithm->address,
+               erase_algorithm->address + sizeof(lpcspifi_flash_erase_code) - 4,
+               3000*(last - first + 1), &armv7m_info);
+
+       if (retval != ERROR_OK)
+               LOG_ERROR("Error executing flash erase algorithm");
+
+       target_free_working_area(target, erase_algorithm);
+
+       destroy_reg_param(&reg_params[0]);
+       destroy_reg_param(&reg_params[1]);
+       destroy_reg_param(&reg_params[2]);
+       destroy_reg_param(&reg_params[3]);
+
+       retval = lpcspifi_set_hw_mode(bank);
+
+       return retval;
+}
+
+static int lpcspifi_protect(struct flash_bank *bank, int set,
+       int first, int last)
+{
+       int sector;
+
+       for (sector = first; sector <= last; sector++)
+               bank->sectors[sector].is_protected = set;
+       return ERROR_OK;
+}
+
+static int lpcspifi_write(struct flash_bank *bank, uint8_t *buffer,
+       uint32_t offset, uint32_t count)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t page_size, fifo_size;
+       struct working_area *fifo;
+       struct reg_param reg_params[5];
+       struct armv7m_algorithm armv7m_info;
+       struct working_area *write_algorithm;
+       int sector;
+       int retval = ERROR_OK;
+
+       LOG_DEBUG("offset=0x%08" PRIx32 " count=0x%08" PRIx32,
+               offset, count);
+
+       if (target->state != TARGET_HALTED) {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       if (offset + count > lpcspifi_info->dev->size_in_bytes) {
+               LOG_WARNING("Writes past end of flash. Extra data discarded.");
+               count = lpcspifi_info->dev->size_in_bytes - offset;
+       }
+
+       /* Check sector protection */
+       for (sector = 0; sector < bank->num_sectors; sector++) {
+               /* Start offset in or before this sector? */
+               /* End offset in or behind this sector? */
+               if ((offset <
+                               (bank->sectors[sector].offset + bank->sectors[sector].size))
+                       && ((offset + count - 1) >= bank->sectors[sector].offset)
+                       && bank->sectors[sector].is_protected) {
+                       LOG_ERROR("Flash sector %d protected", sector);
+                       return ERROR_FAIL;
+               }
+       }
+
+       page_size = lpcspifi_info->dev->pagesize;
+
+       retval = lpcspifi_set_hw_mode(bank);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* see contrib/loaders/flash/lpcspifi_write.S for src */
+       static const uint8_t lpcspifi_flash_write_code[] = {
+               0x4f, 0xf4, 0xc0, 0x4a, 0xc4, 0xf2, 0x08, 0x0a,
+               0x4f, 0xf0, 0xea, 0x08, 0xca, 0xf8, 0x8c, 0x81,
+               0x4f, 0xf0, 0x40, 0x08, 0xca, 0xf8, 0x90, 0x81,
+               0x4f, 0xf0, 0x40, 0x08, 0xca, 0xf8, 0x94, 0x81,
+               0x4f, 0xf0, 0xed, 0x08, 0xca, 0xf8, 0x98, 0x81,
+               0x4f, 0xf0, 0xed, 0x08, 0xca, 0xf8, 0x9c, 0x81,
+               0x4f, 0xf0, 0x44, 0x08, 0xca, 0xf8, 0xa0, 0x81,
+               0x4f, 0xf4, 0xc0, 0x4a, 0xc4, 0xf2, 0x0f, 0x0a,
+               0x4f, 0xf4, 0x00, 0x68, 0xca, 0xf8, 0x14, 0x80,
+               0x4f, 0xf4, 0x80, 0x4a, 0xc4, 0xf2, 0x0f, 0x0a,
+               0x4f, 0xf0, 0xff, 0x08, 0xca, 0xf8, 0xab, 0x80,
+               0x4f, 0xf0, 0x00, 0x0a, 0xc4, 0xf2, 0x05, 0x0a,
+               0x4f, 0xf0, 0x00, 0x08, 0xc0, 0xf2, 0x00, 0x18,
+               0xca, 0xf8, 0x94, 0x80, 0x4f, 0xf4, 0x00, 0x5a,
+               0xc4, 0xf2, 0x05, 0x0a, 0x4f, 0xf0, 0x01, 0x08,
+               0xca, 0xf8, 0x00, 0x87, 0x4f, 0xf4, 0x40, 0x5a,
+               0xc4, 0xf2, 0x08, 0x0a, 0x4f, 0xf0, 0x07, 0x08,
+               0xca, 0xf8, 0x00, 0x80, 0x4f, 0xf0, 0x02, 0x08,
+               0xca, 0xf8, 0x10, 0x80, 0xca, 0xf8, 0x04, 0x80,
+               0x4f, 0xf0, 0x00, 0x0b, 0xa3, 0x44, 0x93, 0x45,
+               0x7f, 0xf6, 0xfc, 0xaf, 0x00, 0xf0, 0x6a, 0xf8,
+               0x4f, 0xf0, 0x06, 0x09, 0x00, 0xf0, 0x53, 0xf8,
+               0x00, 0xf0, 0x60, 0xf8, 0x00, 0xf0, 0x62, 0xf8,
+               0x4f, 0xf0, 0x05, 0x09, 0x00, 0xf0, 0x4b, 0xf8,
+               0x4f, 0xf0, 0x00, 0x09, 0x00, 0xf0, 0x47, 0xf8,
+               0x00, 0xf0, 0x54, 0xf8, 0x19, 0xf0, 0x02, 0x0f,
+               0x00, 0xf0, 0x5d, 0x80, 0x00, 0xf0, 0x52, 0xf8,
+               0x4f, 0xf0, 0x02, 0x09, 0x00, 0xf0, 0x3b, 0xf8,
+               0x4f, 0xea, 0x12, 0x49, 0x00, 0xf0, 0x37, 0xf8,
+               0x4f, 0xea, 0x12, 0x29, 0x00, 0xf0, 0x33, 0xf8,
+               0x4f, 0xea, 0x02, 0x09, 0x00, 0xf0, 0x2f, 0xf8,
+               0xd0, 0xf8, 0x00, 0x80, 0xb8, 0xf1, 0x00, 0x0f,
+               0x00, 0xf0, 0x47, 0x80, 0x47, 0x68, 0x47, 0x45,
+               0x3f, 0xf4, 0xf6, 0xaf, 0x17, 0xf8, 0x01, 0x9b,
+               0x00, 0xf0, 0x21, 0xf8, 0x8f, 0x42, 0x28, 0xbf,
+               0x00, 0xf1, 0x08, 0x07, 0x47, 0x60, 0x01, 0x3b,
+               0xbb, 0xb3, 0x02, 0xf1, 0x01, 0x02, 0x93, 0x45,
+               0x7f, 0xf4, 0xe6, 0xaf, 0x00, 0xf0, 0x22, 0xf8,
+               0xa3, 0x44, 0x00, 0xf0, 0x23, 0xf8, 0x4f, 0xf0,
+               0x05, 0x09, 0x00, 0xf0, 0x0c, 0xf8, 0x4f, 0xf0,
+               0x00, 0x09, 0x00, 0xf0, 0x08, 0xf8, 0x00, 0xf0,
+               0x15, 0xf8, 0x19, 0xf0, 0x01, 0x0f, 0x7f, 0xf4,
+               0xf0, 0xaf, 0xff, 0xf7, 0xa7, 0xbf, 0x4f, 0xf4,
+               0x40, 0x5a, 0xc4, 0xf2, 0x08, 0x0a, 0xca, 0xf8,
+               0x08, 0x90, 0xda, 0xf8, 0x0c, 0x90, 0x19, 0xf0,
+               0x10, 0x0f, 0x7f, 0xf4, 0xfa, 0xaf, 0xda, 0xf8,
+               0x08, 0x90, 0x70, 0x47, 0x4f, 0xf0, 0xff, 0x08,
+               0x00, 0xf0, 0x02, 0xb8, 0x4f, 0xf0, 0x00, 0x08,
+               0x4f, 0xf4, 0x80, 0x4a, 0xc4, 0xf2, 0x0f, 0x0a,
+               0xca, 0xf8, 0xab, 0x80, 0x70, 0x47, 0x00, 0x20,
+               0x50, 0x60, 0x30, 0x46, 0x00, 0xbe, 0xff, 0xff
+       };
+
+       if (target_alloc_working_area(target, sizeof(lpcspifi_flash_write_code),
+                       &write_algorithm) != ERROR_OK) {
+               LOG_ERROR("Insufficient working area. You must configure"\
+                       " a working area > %zdB in order to write to SPIFI flash.",
+                       sizeof(lpcspifi_flash_write_code));
+               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       };
+
+       retval = target_write_buffer(target, write_algorithm->address,
+                       sizeof(lpcspifi_flash_write_code),
+                       lpcspifi_flash_write_code);
+       if (retval != ERROR_OK) {
+               target_free_working_area(target, write_algorithm);
+               return retval;
+       }
+
+       /* FIFO allocation */
+       fifo_size = target_get_working_area_avail(target);
+
+       if (fifo_size == 0) {
+               /* if we already allocated the writing code but failed to get fifo
+                * space, free the algorithm */
+               target_free_working_area(target, write_algorithm);
+
+               LOG_ERROR("Insufficient working area. Please allocate at least"\
+                       " %zdB of working area to enable flash writes.",
+                       sizeof(lpcspifi_flash_write_code) + 1
+               );
+
+               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       } else if (fifo_size < page_size)
+               LOG_WARNING("Working area size is limited; flash writes may be"\
+                       " slow. Increase working area size to at least %zdB"\
+                       " to reduce write times.",
+                       sizeof(lpcspifi_flash_write_code) + page_size
+               );
+       else if (fifo_size > 0x2000) /* Beyond this point, we start to get diminishing returns */
+               fifo_size = 0x2000;
+
+       if (target_alloc_working_area(target, fifo_size, &fifo) != ERROR_OK) {
+               target_free_working_area(target, write_algorithm);
+               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       };
+
+       armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+       armv7m_info.core_mode = ARMV7M_MODE_ANY;
+
+       init_reg_param(&reg_params[0], "r0", 32, PARAM_IN_OUT);         /* buffer start, status (out) */
+       init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);            /* buffer end */
+       init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);            /* target address */
+       init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);            /* count (halfword-16bit) */
+       init_reg_param(&reg_params[4], "r4", 32, PARAM_OUT);            /* page size */
+
+       buf_set_u32(reg_params[0].value, 0, 32, fifo->address);
+       buf_set_u32(reg_params[1].value, 0, 32, fifo->address + fifo->size);
+       buf_set_u32(reg_params[2].value, 0, 32, offset);
+       buf_set_u32(reg_params[3].value, 0, 32, count);
+       buf_set_u32(reg_params[4].value, 0, 32, page_size);
+
+       retval = target_run_flash_async_algorithm(target, buffer, count, 1,
+                       0, NULL,
+                       5, reg_params,
+                       fifo->address, fifo->size,
+                       write_algorithm->address, 0,
+                       &armv7m_info
+       );
+
+       if (retval != ERROR_OK)
+               LOG_ERROR("Error executing flash write algorithm");
+
+       target_free_working_area(target, fifo);
+       target_free_working_area(target, write_algorithm);
+
+       destroy_reg_param(&reg_params[0]);
+       destroy_reg_param(&reg_params[1]);
+       destroy_reg_param(&reg_params[2]);
+       destroy_reg_param(&reg_params[3]);
+       destroy_reg_param(&reg_params[4]);
+
+       /* Switch to HW mode before return to prompt */
+       retval = lpcspifi_set_hw_mode(bank);
+       return retval;
+}
+
+/* Return ID of flash device */
+/* On exit, SW mode is kept */
+static int lpcspifi_read_flash_id(struct flash_bank *bank, uint32_t *id)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base = lpcspifi_info->ssp_base;
+       uint32_t io_base = lpcspifi_info->io_base;
+       uint32_t value;
+       int retval;
+
+       if (target->state != TARGET_HALTED) {
+               LOG_ERROR("Target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       LOG_DEBUG("Getting ID");
+       retval = lpcspifi_set_sw_mode(bank);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* poll WIP */
+       if (retval == ERROR_OK)
+               retval = wait_till_ready(bank, SSP_PROBE_TIMEOUT);
+
+       /* Send SPI command "read ID" */
+       if (retval == ERROR_OK)
+               retval = ssp_setcs(target, io_base, 0);
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, SPIFLASH_READ_ID);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+
+       /* Dummy write to clock in data */
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, 0x00);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               ((uint8_t *)id)[0] = value;
+
+       /* Dummy write to clock in data */
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, 0x00);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               ((uint8_t *)id)[1] = value;
+
+       /* Dummy write to clock in data */
+       if (retval == ERROR_OK)
+               retval = ssp_write_reg(target, ssp_base, SSP_DATA, 0x00);
+       if (retval == ERROR_OK)
+               retval = poll_ssp_busy(target, ssp_base, SSP_CMD_TIMEOUT);
+       if (retval == ERROR_OK)
+               retval = ssp_read_reg(target, ssp_base, SSP_DATA, &value);
+       if (retval == ERROR_OK)
+               ((uint8_t *)id)[2] = value;
+
+       if (retval == ERROR_OK)
+               retval = ssp_setcs(target, io_base, 1);
+
+       return retval;
+}
+
+static int lpcspifi_probe(struct flash_bank *bank)
+{
+       struct target *target = bank->target;
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       uint32_t ssp_base;
+       uint32_t io_base;
+       uint32_t ioconfig_base;
+       struct flash_sector *sectors;
+       uint32_t id = 0; /* silence uninitialized warning */
+       struct lpcspifi_target *target_device;
+       int retval;
+
+       /* If we've already probed, we should be fine to skip this time. */
+       if (lpcspifi_info->probed)
+               return ERROR_OK;
+       lpcspifi_info->probed = 0;
+
+       for (target_device = target_devices ; target_device->name ; ++target_device)
+               if (target_device->tap_idcode == target->tap->idcode)
+                       break;
+       if (!target_device->name) {
+               LOG_ERROR("Device ID 0x%" PRIx32 " is not known as SPIFI capable",
+                               target->tap->idcode);
+               return ERROR_FAIL;
+       }
+
+       ssp_base = target_device->ssp_base;
+       io_base = target_device->io_base;
+       ioconfig_base = target_device->ioconfig_base;
+       lpcspifi_info->ssp_base = ssp_base;
+       lpcspifi_info->io_base = io_base;
+       lpcspifi_info->ioconfig_base = ioconfig_base;
+       lpcspifi_info->bank_num = bank->bank_number;
+
+       LOG_DEBUG("Valid SPIFI on device %s at address 0x%" PRIx32,
+               target_device->name, bank->base);
+
+       /* read and decode flash ID; returns in SW mode */
+       retval = lpcspifi_read_flash_id(bank, &id);
+       if (retval != ERROR_OK)
+               return retval;
+
+       retval = lpcspifi_set_hw_mode(bank);
+       if (retval != ERROR_OK)
+               return retval;
+
+       lpcspifi_info->dev = NULL;
+       for (struct flash_device *p = flash_devices; p->name ; p++)
+               if (p->device_id == id) {
+                       lpcspifi_info->dev = p;
+                       break;
+               }
+
+       if (!lpcspifi_info->dev) {
+               LOG_ERROR("Unknown flash device (ID 0x%08" PRIx32 ")", id);
+               return ERROR_FAIL;
+       }
+
+       LOG_INFO("Found flash device \'%s\' (ID 0x%08" PRIx32 ")",
+               lpcspifi_info->dev->name, lpcspifi_info->dev->device_id);
+
+       /* Set correct size value */
+       bank->size = lpcspifi_info->dev->size_in_bytes;
+
+       /* create and fill sectors array */
+       bank->num_sectors =
+               lpcspifi_info->dev->size_in_bytes / lpcspifi_info->dev->sectorsize;
+       sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
+       if (sectors == NULL) {
+               LOG_ERROR("not enough memory");
+               return ERROR_FAIL;
+       }
+
+       for (int sector = 0; sector < bank->num_sectors; sector++) {
+               sectors[sector].offset = sector * lpcspifi_info->dev->sectorsize;
+               sectors[sector].size = lpcspifi_info->dev->sectorsize;
+               sectors[sector].is_erased = -1;
+               sectors[sector].is_protected = 1;
+       }
+
+       bank->sectors = sectors;
+
+       lpcspifi_info->probed = 1;
+       return ERROR_OK;
+}
+
+static int lpcspifi_auto_probe(struct flash_bank *bank)
+{
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+       if (lpcspifi_info->probed)
+               return ERROR_OK;
+       return lpcspifi_probe(bank);
+}
+
+static int lpcspifi_protect_check(struct flash_bank *bank)
+{
+       /* Nothing to do. Protection is only handled in SW. */
+       return ERROR_OK;
+}
+
+static int get_lpcspifi_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+       struct lpcspifi_flash_bank *lpcspifi_info = bank->driver_priv;
+
+       if (!(lpcspifi_info->probed)) {
+               snprintf(buf, buf_size,
+                       "\nSPIFI flash bank not probed yet\n");
+               return ERROR_OK;
+       }
+
+       snprintf(buf, buf_size, "\nSPIFI flash information:\n"
+               "  Device \'%s\' (ID 0x%08x)\n",
+               lpcspifi_info->dev->name, lpcspifi_info->dev->device_id);
+
+       return ERROR_OK;
+}
+
+struct flash_driver lpcspifi_flash = {
+       .name = "lpcspifi",
+       .flash_bank_command = lpcspifi_flash_bank_command,
+       .erase = lpcspifi_erase,
+       .protect = lpcspifi_protect,
+       .write = lpcspifi_write,
+       .read = default_flash_read,
+       .probe = lpcspifi_probe,
+       .auto_probe = lpcspifi_auto_probe,
+       .erase_check = default_flash_blank_check,
+       .protect_check = lpcspifi_protect_check,
+       .info = get_lpcspifi_info,
+};
diff --git a/tcl/board/lpc4350_spifi_generic.cfg b/tcl/board/lpc4350_spifi_generic.cfg
new file mode 100644 (file)
index 0000000..a529c19
--- /dev/null
@@ -0,0 +1,18 @@
+#
+# Generic LPC4350 board w/ SPIFI flash.
+# This config file is intended as an example of how to
+# use the lpcspifi flash driver, but it should be functional
+# for most LPC4350 boards utilizing SPIFI flash.
+
+set CHIPNAME lpc4350
+
+source [find target/lpc4350.cfg]
+
+#A large working area greatly reduces flash write times
+set _WORKAREASIZE 0x2000
+
+$_CHIPNAME.m4 configure -work-area-phys 0x10000000 -work-area-size $_WORKAREASIZE
+
+#Configure the flash bank; 0x14000000 is the base address for
+#lpc43xx/lpc18xx family micros.
+flash bank SPIFI_FLASH lpcspifi 0x14000000 0 0 0 $_CHIPNAME.m4