--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2006 by Magnus Lundin *
+ * lundin@mlu.mine.nu *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2009 by Dirk Behme *
+ * dirk.behme@gmail.com - copy from cortex_m3 *
+ * *
+ * 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. *
+ * *
+ * Cortex-A8(tm) TRM, ARM DDI 0344H *
+ * *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "replacements.h"
+
+#include "cortex_a8.h"
+#include "armv7m.h"
+
+#include "register.h"
+#include "target.h"
+#include "target_request.h"
+#include "log.h"
+#include "jtag.h"
+#include "arm_jtag.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+/* cli handling */
+int cortex_a8_register_commands(struct command_context_s *cmd_ctx);
+
+/* forward declarations */
+int cortex_a8_target_create(struct target_s *target, Jim_Interp *interp);
+
+target_type_t cortexa8_target =
+{
+ .name = "cortex_a8",
+
+ .poll = NULL,
+ .arch_state = armv7m_arch_state,
+
+ .target_request_data = NULL,
+
+ .halt = NULL,
+ .resume = NULL,
+ .step = NULL,
+
+ .assert_reset = NULL,
+ .deassert_reset = NULL,
+ .soft_reset_halt = NULL,
+
+ .get_gdb_reg_list = armv7m_get_gdb_reg_list,
+
+ .read_memory = cortex_a8_read_memory,
+ .write_memory = cortex_a8_write_memory,
+ .bulk_write_memory = NULL,
+ .checksum_memory = NULL,
+ .blank_check_memory = NULL,
+
+ .run_algorithm = armv7m_run_algorithm,
+
+ .add_breakpoint = NULL,
+ .remove_breakpoint = NULL,
+ .add_watchpoint = NULL,
+ .remove_watchpoint = NULL,
+
+ .register_commands = cortex_a8_register_commands,
+ .target_create = cortex_a8_target_create,
+ .init_target = NULL,
+ .examine = NULL,
+ .quit = NULL
+};
+
+int cortex_a8_dcc_read(swjdp_common_t *swjdp, u8 *value, u8 *ctrl)
+{
+ u16 dcrdr;
+
+ mem_ap_read_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR);
+ *ctrl = (u8)dcrdr;
+ *value = (u8)(dcrdr >> 8);
+
+ LOG_DEBUG("data 0x%x ctrl 0x%x", *value, *ctrl);
+
+ /* write ack back to software dcc register
+ * signify we have read data */
+ if (dcrdr & (1 << 0))
+ {
+ dcrdr = 0;
+ mem_ap_write_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR);
+ }
+
+ return ERROR_OK;
+}
+
+int cortex_a8_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
+{
+ /* get pointers to arch-specific information */
+ armv7m_common_t *armv7m = target->arch_info;
+ swjdp_common_t *swjdp = &armv7m->swjdp_info;
+ int retval;
+
+ /* sanitize arguments */
+ if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
+ return ERROR_INVALID_ARGUMENTS;
+
+ /* cortex_a8 handles unaligned memory access */
+
+ switch (size)
+ {
+ case 4:
+ retval = mem_ap_read_buf_u32(swjdp, buffer, 4 * count, address);
+ break;
+ case 2:
+ retval = mem_ap_read_buf_u16(swjdp, buffer, 2 * count, address);
+ break;
+ case 1:
+ retval = mem_ap_read_buf_u8(swjdp, buffer, count, address);
+ break;
+ default:
+ LOG_ERROR("BUG: we shouldn't get here");
+ exit(-1);
+ }
+
+ return retval;
+}
+
+int cortex_a8_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
+{
+ /* get pointers to arch-specific information */
+ armv7m_common_t *armv7m = target->arch_info;
+ swjdp_common_t *swjdp = &armv7m->swjdp_info;
+ int retval;
+
+ /* sanitize arguments */
+ if (((size != 4) && (size != 2) && (size != 1)) || (count == 0) || !(buffer))
+ return ERROR_INVALID_ARGUMENTS;
+
+ switch (size)
+ {
+ case 4:
+ retval = mem_ap_write_buf_u32(swjdp, buffer, 4 * count, address);
+ break;
+ case 2:
+ retval = mem_ap_write_buf_u16(swjdp, buffer, 2 * count, address);
+ break;
+ case 1:
+ retval = mem_ap_write_buf_u8(swjdp, buffer, count, address);
+ break;
+ default:
+ LOG_ERROR("BUG: we shouldn't get here");
+ exit(-1);
+ }
+
+ return retval;
+}
+
+int cortex_a8_handle_target_request(void *priv)
+{
+ target_t *target = priv;
+ if (!target->type->examined)
+ return ERROR_OK;
+ armv7m_common_t *armv7m = target->arch_info;
+ swjdp_common_t *swjdp = &armv7m->swjdp_info;
+
+ if (!target->dbg_msg_enabled)
+ return ERROR_OK;
+
+ if (target->state == TARGET_RUNNING)
+ {
+ u8 data;
+ u8 ctrl;
+
+ cortex_a8_dcc_read(swjdp, &data, &ctrl);
+
+ /* check if we have data */
+ if (ctrl & (1 << 0))
+ {
+ u32 request;
+
+ /* we assume target is quick enough */
+ request = data;
+ cortex_a8_dcc_read(swjdp, &data, &ctrl);
+ request |= (data << 8);
+ cortex_a8_dcc_read(swjdp, &data, &ctrl);
+ request |= (data << 16);
+ cortex_a8_dcc_read(swjdp, &data, &ctrl);
+ request |= (data << 24);
+ target_request(target, request);
+ }
+ }
+
+ return ERROR_OK;
+}
+
+int cortex_a8_init_arch_info(target_t *target, cortex_a8_common_t *cortex_a8, jtag_tap_t *tap)
+{
+ armv7m_common_t *armv7m;
+ armv7m = &cortex_a8->armv7m;
+
+ /* prepare JTAG information for the new target */
+ cortex_a8->jtag_info.tap = tap;
+ cortex_a8->jtag_info.scann_size = 4;
+
+ armv7m->swjdp_info.dp_select_value = -1;
+ armv7m->swjdp_info.ap_csw_value = -1;
+ armv7m->swjdp_info.ap_tar_value = -1;
+ armv7m->swjdp_info.jtag_info = &cortex_a8->jtag_info;
+
+ /* initialize arch-specific breakpoint handling */
+
+ cortex_a8->common_magic = CORTEX_A8_COMMON_MAGIC;
+ cortex_a8->arch_info = NULL;
+
+ /* register arch-specific functions */
+ armv7m->examine_debug_reason = NULL;
+
+ armv7m->pre_debug_entry = NULL;
+ armv7m->post_debug_entry = NULL;
+
+ armv7m->pre_restore_context = NULL;
+ armv7m->post_restore_context = NULL;
+
+ armv7m_init_arch_info(target, armv7m);
+ armv7m->arch_info = cortex_a8;
+ armv7m->load_core_reg_u32 = NULL;
+ armv7m->store_core_reg_u32 = NULL;
+
+ target_register_timer_callback(cortex_a8_handle_target_request, 1, 1, target);
+
+ return ERROR_OK;
+}
+
+int cortex_a8_target_create(struct target_s *target, Jim_Interp *interp)
+{
+ cortex_a8_common_t *cortex_a8 = calloc(1,sizeof(cortex_a8_common_t));
+
+ cortex_a8_init_arch_info(target, cortex_a8, target->tap);
+
+ return ERROR_OK;
+}
+
+int cortex_a8_register_commands(struct command_context_s *cmd_ctx)
+{
+ int retval;
+
+ retval = armv7m_register_commands(cmd_ctx);
+
+ register_command(cmd_ctx, NULL, "cortex_a8", NULL, COMMAND_ANY, "cortex_a8 specific commands");
+
+ return retval;
+}
--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2006 by Magnus Lundin *
+ * lundin@mlu.mine.nu *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2009 by Dirk Behme *
+ * dirk.behme@gmail.com - copy from cortex_m3 *
+ * *
+ * 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. *
+ ***************************************************************************/
+#ifndef CORTEX_A8_H
+#define CORTEX_A8_H
+
+#include "register.h"
+#include "target.h"
+#include "armv7m.h"
+
+extern char* cortex_a8_state_strings[];
+
+#define CORTEX_A8_COMMON_MAGIC 0x411fc082
+
+#define CPUID 0x54011D00
+/* Debug Control Block */
+#define DCB_DHCSR 0x54011DF0
+#define DCB_DCRSR 0x54011DF4
+#define DCB_DCRDR 0x54011DF8
+#define DCB_DEMCR 0x54011DFC
+
+typedef struct cortex_a8_fp_comparator_s
+{
+ int used;
+ int type;
+ u32 fpcr_value;
+ u32 fpcr_address;
+} cortex_a8_fp_comparator_t;
+
+typedef struct cortex_a8_dwt_comparator_s
+{
+ int used;
+ u32 comp;
+ u32 mask;
+ u32 function;
+ u32 dwt_comparator_address;
+} cortex_a8_dwt_comparator_t;
+
+typedef struct cortex_a8_common_s
+{
+ int common_magic;
+ arm_jtag_t jtag_info;
+
+ /* Context information */
+ u32 dcb_dhcsr;
+ u32 nvic_dfsr; /* Debug Fault Status Register - shows reason for debug halt */
+ u32 nvic_icsr; /* Interrupt Control State Register - shows active and pending IRQ */
+
+ /* Flash Patch and Breakpoint (FPB) */
+ int fp_num_lit;
+ int fp_num_code;
+ int fp_code_available;
+ int fpb_enabled;
+ int auto_bp_type;
+ cortex_a8_fp_comparator_t *fp_comparator_list;
+
+ /* Data Watchpoint and Trace (DWT) */
+ int dwt_num_comp;
+ int dwt_comp_available;
+ cortex_a8_dwt_comparator_t *dwt_comparator_list;
+
+ /* Interrupts */
+ int intlinesnum;
+ u32 *intsetenable;
+
+ armv7m_common_t armv7m;
+ void *arch_info;
+} cortex_a8_common_t;
+
+extern int cortex_a8_init_arch_info(target_t *target, cortex_a8_common_t *cortex_a8, jtag_tap_t *tap);
+int cortex_a8_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
+int cortex_a8_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
+
+#endif /* CORTEX_A8_H */
Code Review / openocd.git / commitdiff