From c68a267ee120bd027eacc0484a7a7b6e7c3f7054 Mon Sep 17 00:00:00 2001 From: Salvador Arroyo Date: Wed, 29 Feb 2012 23:55:53 +0100 Subject: [PATCH] topic: Flash support for Pic32mx1xx/2xx Change-Id: I496cb745fb1eb5c9159471838013b8d19418f5c0 Signed-off-by: Salvador Arroyo Reviewed-on: http://openocd.zylin.com/500 Tested-by: jenkins Reviewed-by: Spencer Oliver --- src/flash/nor/pic32mx.c | 60 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 54 insertions(+), 6 deletions(-) diff --git a/src/flash/nor/pic32mx.c b/src/flash/nor/pic32mx.c index 3c1a1d9caa..248e061576 100644 --- a/src/flash/nor/pic32mx.c +++ b/src/flash/nor/pic32mx.c @@ -51,6 +51,7 @@ /* pic32mx configuration register locations */ +#define PIC32MX_DEVCFG0_1_2 0xBFC00BFC #define PIC32MX_DEVCFG0 0xBFC02FFC #define PIC32MX_DEVCFG1 0xBFC02FF8 #define PIC32MX_DEVCFG2 0xBFC02FF4 @@ -91,9 +92,12 @@ #define NVMKEY1 0xAA996655 #define NVMKEY2 0x556699AA +#define MX_1_2 1 /* PIC32mx1xx/2xx */ + struct pic32mx_flash_bank { struct working_area *write_algorithm; int probed; + int dev_type; /* Default 0. 1 for Pic32MX1XX/2XX variant */ }; /* @@ -190,6 +194,7 @@ FLASH_BANK_COMMAND_HANDLER(pic32mx_flash_bank_command) pic32mx_info->write_algorithm = NULL; pic32mx_info->probed = 0; + pic32mx_info->dev_type = 0; return ERROR_OK; } @@ -244,7 +249,9 @@ static int pic32mx_nvm_exec(struct flash_bank *bank, uint32_t op, uint32_t timeo static int pic32mx_protect_check(struct flash_bank *bank) { struct target *target = bank->target; + struct pic32mx_flash_bank *pic32mx_info = bank->driver_priv; + uint32_t config0_address; uint32_t devcfg0; int s; int num_pages; @@ -254,7 +261,12 @@ static int pic32mx_protect_check(struct flash_bank *bank) return ERROR_TARGET_NOT_HALTED; } - target_read_u32(target, PIC32MX_DEVCFG0, &devcfg0); + if (pic32mx_info->dev_type == MX_1_2) + config0_address = PIC32MX_DEVCFG0_1_2; + else + config0_address = PIC32MX_DEVCFG0; + + target_read_u32(target, config0_address, &devcfg0); if ((devcfg0 & (1 << 28)) == 0) /* code protect bit */ num_pages = 0xffff; /* All pages protected */ @@ -327,7 +339,7 @@ static int pic32mx_protect(struct flash_bank *bank, int set, int first, int last /* see contib/loaders/flash/pic32mx.s for src */ -static const uint32_t pic32mx_flash_write_code[] = { +static uint32_t pic32mx_flash_write_code[] = { /* write: */ 0x3C08AA99, /* lui $t0, 0xaa99 */ 0x35086655, /* ori $t0, 0x6655 */ @@ -414,6 +426,21 @@ static int pic32mx_write_block(struct flash_bank *bank, uint8_t *buffer, return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; }; + /* Change values for counters and row size, depending on variant */ + if (pic32mx_info->dev_type == MX_1_2) { + /* 128 byte row */ + pic32mx_flash_write_code[8] = 0x2CD30020; + pic32mx_flash_write_code[14] = 0x24840080; + pic32mx_flash_write_code[15] = 0x24A50080; + pic32mx_flash_write_code[17] = 0x24C6FFE0; + } else { + /* 512 byte row */ + pic32mx_flash_write_code[8] = 0x2CD30080; + pic32mx_flash_write_code[14] = 0x24840200; + pic32mx_flash_write_code[15] = 0x24A50200; + pic32mx_flash_write_code[17] = 0x24C6FF80; + } + retval = target_write_buffer(target, pic32mx_info->write_algorithm->address, sizeof(pic32mx_flash_write_code), (uint8_t *)pic32mx_flash_write_code); if (retval != ERROR_OK) @@ -610,7 +637,20 @@ static int pic32mx_probe(struct flash_bank *bank) return ERROR_FLASH_OPERATION_FAILED; } - page_size = 4096; + /* Check for PIC32mx1xx/2xx */ + for (i = 0; pic32mx_devs[i].name != NULL; i++) { + if (pic32mx_devs[i].devid == (device_id & 0x0fffffff)) { + if ((*(pic32mx_devs[i].name) == '1') || (*(pic32mx_devs[i].name) == '2')) + pic32mx_info->dev_type = MX_1_2; + break; + } + } + + if (pic32mx_info->dev_type == MX_1_2) + page_size = 1024; + else + page_size = 4096; + if (Virt2Phys(bank->base) == PIC32MX_PHYS_BOOT_FLASH) { /* 0x1FC00000: Boot flash size */ @@ -624,13 +664,21 @@ static int pic32mx_probe(struct flash_bank *bank) } #else /* fixed 12k boot bank - see comments above */ - num_pages = (12 * 1024); + if (pic32mx_info->dev_type == MX_1_2) + num_pages = (3 * 1024); + else + num_pages = (12 * 1024); #endif } else { /* read the flash size from the device */ if (target_read_u32(target, PIC32MX_BMXPFMSZ, &num_pages) != ERROR_OK) { - LOG_WARNING("PIC32MX flash size failed, probe inaccurate - assuming 512k flash"); - num_pages = (512 * 1024); + if (pic32mx_info->dev_type == MX_1_2) { + LOG_WARNING("PIC32MX flash size failed, probe inaccurate - assuming 32k flash"); + num_pages = (32 * 1024); + } else { + LOG_WARNING("PIC32MX flash size failed, probe inaccurate - assuming 512k flash"); + num_pages = (512 * 1024); + } } } -- 2.30.2