diff options
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/mips_ejtag.c | 6 | ||||
| -rw-r--r-- | src/target/mips_m4k.c | 65 |
2 files changed, 61 insertions, 10 deletions
diff --git a/src/target/mips_ejtag.c b/src/target/mips_ejtag.c index 2394b00c..4c8010b5 100644 --- a/src/target/mips_ejtag.c +++ b/src/target/mips_ejtag.c @@ -118,7 +118,7 @@ int mips_ejtag_drscan_32(mips_ejtag_t *ejtag_info, u32 *data) if (tap==NULL) return ERROR_FAIL; scan_field_t field; - u8 t[4]; + u8 t[4], r[4]; int retval; field.tap = tap; @@ -126,7 +126,7 @@ int mips_ejtag_drscan_32(mips_ejtag_t *ejtag_info, u32 *data) field.out_value = t; buf_set_u32(field.out_value, 0, field.num_bits, *data); - field.in_value = (u8*)data; + field.in_value = r; @@ -139,6 +139,8 @@ int mips_ejtag_drscan_32(mips_ejtag_t *ejtag_info, u32 *data) return retval; } + *data = buf_get_u32(field.in_value, 0, 32); + keep_alive(); return ERROR_OK; diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c index 5e98a2a0..b271efe1 100644 --- a/src/target/mips_m4k.c +++ b/src/target/mips_m4k.c @@ -732,6 +732,7 @@ int mips_m4k_read_memory(struct target_s *target, u32 address, u32 size, u32 cou { mips32_common_t *mips32 = target->arch_info; mips_ejtag_t *ejtag_info = &mips32->ejtag_info; + int retval; LOG_DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address, size, count); @@ -755,22 +756,46 @@ int mips_m4k_read_memory(struct target_s *target, u32 address, u32 size, u32 cou case 1: /* if noDMA off, use DMAACC mode for memory read */ if(ejtag_info->impcode & EJTAG_IMP_NODMA) - return mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer); + retval = mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer); else - return mips32_dmaacc_read_mem(ejtag_info, address, size, count, (void *)buffer); + retval = mips32_dmaacc_read_mem(ejtag_info, address, size, count, (void *)buffer); + break; default: LOG_ERROR("BUG: we shouldn't get here"); exit(-1); break; } - return ERROR_OK; + /* TAP data register is loaded LSB first (little endian) */ + if (target->endianness == TARGET_BIG_ENDIAN) + { + u32 i, t32; + u16 t16; + + for(i = 0; i < (count*size); i += size) + { + switch(size) + { + case 4: + t32 = le_to_h_u32(&buffer[i]); + h_u32_to_be(&buffer[i], t32); + break; + case 2: + t16 = le_to_h_u16(&buffer[i]); + h_u16_to_be(&buffer[i], t16); + break; + } + } + } + + return retval; } int mips_m4k_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer) { mips32_common_t *mips32 = target->arch_info; mips_ejtag_t *ejtag_info = &mips32->ejtag_info; + int retval; LOG_DEBUG("address: 0x%8.8x, size: 0x%8.8x, count: 0x%8.8x", address, size, count); @@ -793,10 +818,6 @@ int mips_m4k_write_memory(struct target_s *target, u32 address, u32 size, u32 co case 2: case 1: /* if noDMA off, use DMAACC mode for memory write */ - if(ejtag_info->impcode & EJTAG_IMP_NODMA) - mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer); - else - mips32_dmaacc_write_mem(ejtag_info, address, size, count, (void *)buffer); break; default: LOG_ERROR("BUG: we shouldn't get here"); @@ -804,7 +825,35 @@ int mips_m4k_write_memory(struct target_s *target, u32 address, u32 size, u32 co break; } - return ERROR_OK; + /* TAP data register is loaded LSB first (little endian) */ + if (target->endianness == TARGET_BIG_ENDIAN) + { + u32 i, t32; + u16 t16; + + for(i = 0; i < (count*size); i += size) + { + switch(size) + { + case 4: + t32 = be_to_h_u32(&buffer[i]); + h_u32_to_le(&buffer[i], t32); + break; + case 2: + t16 = be_to_h_u16(&buffer[i]); + h_u16_to_le(&buffer[i], t16); + break; + } + } + } + + if(ejtag_info->impcode & EJTAG_IMP_NODMA) + retval = mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer); + else + retval = mips32_dmaacc_write_mem(ejtag_info, address, size, count, (void *)buffer); + + + return retval; } int mips_m4k_register_commands(struct command_context_s *cmd_ctx) |