#include "register.h"
static const char *mips_isa_strings[] = {
- "MIPS32", "MIPS16"
+ "MIPS32", "MIPS16", "", "MICRO MIPS32",
};
#define MIPS32_GDB_DUMMY_FP_REG 1
target->arch_info = mips32;
mips32->common_magic = MIPS32_COMMON_MAGIC;
mips32->fast_data_area = NULL;
+ mips32->isa_imp = MIPS32_ONLY; /* default */
/* has breakpoint/watchpoint unit been scanned */
mips32->bp_scanned = 0;
mips32->ejtag_info.tap = tap;
mips32->read_core_reg = mips32_read_core_reg;
mips32->write_core_reg = mips32_write_core_reg;
-
- mips32->ejtag_info.scan_delay = MIPS32_SCAN_DELAY_LEGACY_MODE; /* Initial default value */
+ /* if unknown endianness defaults to little endian, 1 */
+ mips32->ejtag_info.endianness = target->endianness == TARGET_BIG_ENDIAN ? 0 : 1;
+ mips32->ejtag_info.scan_delay = MIPS32_SCAN_DELAY_LEGACY_MODE;
mips32->ejtag_info.mode = 0; /* Initial default value */
-
+ mips32->ejtag_info.isa = 0; /* isa on debug mips32, updated by poll function */
+ mips32->ejtag_info.config_regs = 0; /* no config register read */
return ERROR_OK;
}
/* run to exit point. return error if exit point was not reached. */
-static int mips32_run_and_wait(struct target *target, uint32_t entry_point,
- int timeout_ms, uint32_t exit_point, struct mips32_common *mips32)
+static int mips32_run_and_wait(struct target *target, target_addr_t entry_point,
+ int timeout_ms, target_addr_t exit_point, struct mips32_common *mips32)
{
uint32_t pc;
int retval;
int mips32_run_algorithm(struct target *target, int num_mem_params,
struct mem_param *mem_params, int num_reg_params,
- struct reg_param *reg_params, uint32_t entry_point,
- uint32_t exit_point, int timeout_ms, void *arch_info)
+ struct reg_param *reg_params, target_addr_t entry_point,
+ target_addr_t exit_point, int timeout_ms, void *arch_info)
{
struct mips32_common *mips32 = target_to_mips32(target);
struct mips32_algorithm *mips32_algorithm_info = arch_info;
return ERROR_OK;
}
-int mips32_checksum_memory(struct target *target, uint32_t address,
+/* read config to config3 cp0 registers and log isa implementation */
+int mips32_read_config_regs(struct target *target)
+{
+ struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
+
+ if (ejtag_info->config_regs == 0)
+ for (int i = 0; i != 4; i++) {
+ int retval = mips32_cp0_read(ejtag_info, &ejtag_info->config[i], 16, i);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("isa info not available, failed to read cp0 config register: %" PRId32, i);
+ ejtag_info->config_regs = 0;
+ return retval;
+ }
+ ejtag_info->config_regs = i + 1;
+ if ((ejtag_info->config[i] & (1 << 31)) == 0)
+ break; /* no more config registers implemented */
+ }
+ else
+ return ERROR_OK; /* already succesfully read */
+
+ LOG_DEBUG("read %"PRId32" config registers", ejtag_info->config_regs);
+
+ if (ejtag_info->impcode & EJTAG_IMP_MIPS16) {
+ mips32->isa_imp = MIPS32_MIPS16;
+ LOG_USER("MIPS32 with MIPS16 support implemented");
+
+ } else if (ejtag_info->config_regs >= 4) { /* config3 implemented */
+ unsigned isa_imp = (ejtag_info->config[3] & MIPS32_CONFIG3_ISA_MASK) >> MIPS32_CONFIG3_ISA_SHIFT;
+ if (isa_imp == 1) {
+ mips32->isa_imp = MMIPS32_ONLY;
+ LOG_USER("MICRO MIPS32 only implemented");
+
+ } else if (isa_imp != 0) {
+ mips32->isa_imp = MIPS32_MMIPS32;
+ LOG_USER("MIPS32 and MICRO MIPS32 implemented");
+ }
+ }
+
+ if (mips32->isa_imp == MIPS32_ONLY) /* initial default value */
+ LOG_USER("MIPS32 only implemented");
+
+ return ERROR_OK;
+}
+int mips32_checksum_memory(struct target *target, target_addr_t address,
uint32_t count, uint32_t *checksum)
{
struct working_area *crc_algorithm;
struct reg_param reg_params[2];
struct mips32_algorithm mips32_info;
- /* see contrib/loaders/checksum/mips32.s for src */
+ struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
- static const uint32_t mips_crc_code[] = {
- 0x248C0000, /* addiu $t4, $a0, 0 */
- 0x24AA0000, /* addiu $t2, $a1, 0 */
- 0x2404FFFF, /* addiu $a0, $zero, 0xffffffff */
- 0x10000010, /* beq $zero, $zero, ncomp */
- 0x240B0000, /* addiu $t3, $zero, 0 */
+ /* see contrib/loaders/checksum/mips32.s for src */
+ uint32_t isa = ejtag_info->isa ? 1 : 0;
+
+ uint32_t mips_crc_code[] = {
+ MIPS32_ADDIU(isa, 12, 4, 0), /* addiu $t4, $a0, 0 */
+ MIPS32_ADDIU(isa, 10, 5, 0), /* addiu $t2, $a1, 0 */
+ MIPS32_ADDIU(isa, 4, 0, 0xFFFF), /* addiu $a0, $zero, 0xffff */
+ MIPS32_BEQ(isa, 0, 0, 0x10 << isa), /* beq $zero, $zero, ncomp */
+ MIPS32_ADDIU(isa, 11, 0, 0), /* addiu $t3, $zero, 0 */
/* nbyte: */
- 0x81850000, /* lb $a1, ($t4) */
- 0x218C0001, /* addi $t4, $t4, 1 */
- 0x00052E00, /* sll $a1, $a1, 24 */
- 0x3C0204C1, /* lui $v0, 0x04c1 */
- 0x00852026, /* xor $a0, $a0, $a1 */
- 0x34471DB7, /* ori $a3, $v0, 0x1db7 */
- 0x00003021, /* addu $a2, $zero, $zero */
- /* loop: */
- 0x00044040, /* sll $t0, $a0, 1 */
- 0x24C60001, /* addiu $a2, $a2, 1 */
- 0x28840000, /* slti $a0, $a0, 0 */
- 0x01074826, /* xor $t1, $t0, $a3 */
- 0x0124400B, /* movn $t0, $t1, $a0 */
- 0x28C30008, /* slti $v1, $a2, 8 */
- 0x1460FFF9, /* bne $v1, $zero, loop */
- 0x01002021, /* addu $a0, $t0, $zero */
- /* ncomp: */
- 0x154BFFF0, /* bne $t2, $t3, nbyte */
- 0x256B0001, /* addiu $t3, $t3, 1 */
- 0x7000003F, /* sdbbp */
+ MIPS32_LB(isa, 5, 0, 12), /* lb $a1, ($t4) */
+ MIPS32_ADDI(isa, 12, 12, 1), /* addi $t4, $t4, 1 */
+ MIPS32_SLL(isa, 5, 5, 24), /* sll $a1, $a1, 24 */
+ MIPS32_LUI(isa, 2, 0x04c1), /* lui $v0, 0x04c1 */
+ MIPS32_XOR(isa, 4, 4, 5), /* xor $a0, $a0, $a1 */
+ MIPS32_ORI(isa, 7, 2, 0x1db7), /* ori $a3, $v0, 0x1db7 */
+ MIPS32_ADDU(isa, 6, 0, 0), /* addu $a2, $zero, $zero */
+ /* loop */
+ MIPS32_SLL(isa, 8, 4, 1), /* sll $t0, $a0, 1 */
+ MIPS32_ADDIU(isa, 6, 6, 1), /* addiu $a2, $a2, 1 */
+ MIPS32_SLTI(isa, 4, 4, 0), /* slti $a0, $a0, 0 */
+ MIPS32_XOR(isa, 9, 8, 7), /* xor $t1, $t0, $a3 */
+ MIPS32_MOVN(isa, 8, 9, 4), /* movn $t0, $t1, $a0 */
+ MIPS32_SLTI(isa, 3, 6, 8), /* slti $v1, $a2, 8 */
+ MIPS32_BNE(isa, 3, 0, NEG16(7 << isa)), /* bne $v1, $zero, loop */
+ MIPS32_ADDU(isa, 4, 8, 0), /* addu $a0, $t0, $zero */
+ /* ncomp */
+ MIPS32_BNE(isa, 10, 11, NEG16(16 << isa)), /* bne $t2, $t3, nbyte */
+ MIPS32_ADDIU(isa, 11, 11, 1), /* addiu $t3, $t3, 1 */
+ MIPS32_SDBBP(isa),
};
/* make sure we have a working area */
if (target_alloc_working_area(target, sizeof(mips_crc_code), &crc_algorithm) != ERROR_OK)
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ pracc_swap16_array(ejtag_info, mips_crc_code, ARRAY_SIZE(mips_crc_code));
+
/* convert mips crc code into a buffer in target endianness */
uint8_t mips_crc_code_8[sizeof(mips_crc_code)];
target_buffer_set_u32_array(target, mips_crc_code_8,
ARRAY_SIZE(mips_crc_code), mips_crc_code);
- target_write_buffer(target, crc_algorithm->address, sizeof(mips_crc_code), mips_crc_code_8);
+ int retval = target_write_buffer(target, crc_algorithm->address, sizeof(mips_crc_code), mips_crc_code_8);
+ if (retval != ERROR_OK)
+ return retval;
mips32_info.common_magic = MIPS32_COMMON_MAGIC;
- mips32_info.isa_mode = MIPS32_ISA_MIPS32;
+ mips32_info.isa_mode = isa ? MIPS32_ISA_MMIPS32 : MIPS32_ISA_MIPS32; /* run isa as in debug mode */
init_reg_param(®_params[0], "r4", 32, PARAM_IN_OUT);
buf_set_u32(reg_params[0].value, 0, 32, address);
int timeout = 20000 * (1 + (count / (1024 * 1024)));
- int retval = target_run_algorithm(target, 0, NULL, 2, reg_params,
- crc_algorithm->address, crc_algorithm->address + (sizeof(mips_crc_code) - 4), timeout,
- &mips32_info);
+ retval = target_run_algorithm(target, 0, NULL, 2, reg_params, crc_algorithm->address,
+ crc_algorithm->address + (sizeof(mips_crc_code) - 4), timeout, &mips32_info);
if (retval == ERROR_OK)
*checksum = buf_get_u32(reg_params[0].value, 0, 32);
return retval;
}
-/** Checks whether a memory region is zeroed. */
+/** Checks whether a memory region is erased. */
int mips32_blank_check_memory(struct target *target,
- uint32_t address, uint32_t count, uint32_t *blank)
+ target_addr_t address, uint32_t count, uint32_t *blank, uint8_t erased_value)
{
struct working_area *erase_check_algorithm;
struct reg_param reg_params[3];
struct mips32_algorithm mips32_info;
- static const uint32_t erase_check_code[] = {
+ struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
+
+ if (erased_value != 0xff) {
+ LOG_ERROR("Erase value 0x%02" PRIx8 " not yet supported for MIPS32",
+ erased_value);
+ return ERROR_FAIL;
+ }
+ uint32_t isa = ejtag_info->isa ? 1 : 0;
+ uint32_t erase_check_code[] = {
/* nbyte: */
- 0x80880000, /* lb $t0, ($a0) */
- 0x00C83024, /* and $a2, $a2, $t0 */
- 0x24A5FFFF, /* addiu $a1, $a1, -1 */
- 0x14A0FFFC, /* bne $a1, $zero, nbyte */
- 0x24840001, /* addiu $a0, $a0, 1 */
- 0x7000003F /* sdbbp */
+ MIPS32_LB(isa, 8, 0, 4), /* lb $t0, ($a0) */
+ MIPS32_AND(isa, 6, 6, 8), /* and $a2, $a2, $t0 */
+ MIPS32_ADDIU(isa, 5, 5, NEG16(1)), /* addiu $a1, $a1, -1 */
+ MIPS32_BNE(isa, 5, 0, NEG16(4 << isa)), /* bne $a1, $zero, nbyte */
+ MIPS32_ADDIU(isa, 4, 4, 1), /* addiu $a0, $a0, 1 */
+ MIPS32_SDBBP(isa) /* sdbbp */
};
/* make sure we have a working area */
if (target_alloc_working_area(target, sizeof(erase_check_code), &erase_check_algorithm) != ERROR_OK)
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ pracc_swap16_array(ejtag_info, erase_check_code, ARRAY_SIZE(erase_check_code));
+
/* convert erase check code into a buffer in target endianness */
uint8_t erase_check_code_8[sizeof(erase_check_code)];
target_buffer_set_u32_array(target, erase_check_code_8,
ARRAY_SIZE(erase_check_code), erase_check_code);
- target_write_buffer(target, erase_check_algorithm->address, sizeof(erase_check_code), erase_check_code_8);
+ int retval = target_write_buffer(target, erase_check_algorithm->address,
+ sizeof(erase_check_code), erase_check_code_8);
+ if (retval != ERROR_OK)
+ return retval;
mips32_info.common_magic = MIPS32_COMMON_MAGIC;
- mips32_info.isa_mode = MIPS32_ISA_MIPS32;
+ mips32_info.isa_mode = isa ? MIPS32_ISA_MMIPS32 : MIPS32_ISA_MIPS32;
init_reg_param(®_params[0], "r4", 32, PARAM_OUT);
buf_set_u32(reg_params[0].value, 0, 32, address);
buf_set_u32(reg_params[1].value, 0, 32, count);
init_reg_param(®_params[2], "r6", 32, PARAM_IN_OUT);
- buf_set_u32(reg_params[2].value, 0, 32, 0xff);
+ buf_set_u32(reg_params[2].value, 0, 32, erased_value);
- int retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
- erase_check_algorithm->address,
- erase_check_algorithm->address + (sizeof(erase_check_code) - 4),
- 10000, &mips32_info);
+ retval = target_run_algorithm(target, 0, NULL, 3, reg_params, erase_check_algorithm->address,
+ erase_check_algorithm->address + (sizeof(erase_check_code) - 4), 10000, &mips32_info);
if (retval == ERROR_OK)
*blank = buf_get_u32(reg_params[2].value, 0, 32);
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