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-rw-r--r--src/flash/nor/cfi.c240
-rw-r--r--src/target/mips32.h6
2 files changed, 245 insertions, 1 deletions
diff --git a/src/flash/nor/cfi.c b/src/flash/nor/cfi.c
index 954dbc21..3f1fbabe 100644
--- a/src/flash/nor/cfi.c
+++ b/src/flash/nor/cfi.c
@@ -31,6 +31,7 @@
#include <target/arm.h>
#include <target/arm7_9_common.h>
#include <target/armv7m.h>
+#include <target/mips32.h>
#include <helper/binarybuffer.h>
#include <target/algorithm.h>
@@ -1278,6 +1279,12 @@ static int cfi_intel_write_block(struct flash_bank *bank, uint8_t *buffer,
uint32_t target_code_size;
int retval = ERROR_OK;
+ /* todo: if ( (!is_armv7m(target_to_armv7m(target)) && (!is_arm(target_to_arm(target)) ) */
+ if (strncmp(target_type_name(target),"mips_m4k",8) == 0)
+ {
+ LOG_ERROR("Your target has no flash block write support yet.");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
cfi_intel_clear_status_register(bank);
@@ -1454,6 +1461,234 @@ cleanup:
return retval;
}
+static int cfi_spansion_write_block_mips(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t address, uint32_t count)
+{
+ struct cfi_flash_bank *cfi_info = bank->driver_priv;
+ struct cfi_spansion_pri_ext *pri_ext = cfi_info->pri_ext;
+ struct target *target = bank->target;
+ struct reg_param reg_params[10];
+ struct mips32_algorithm mips32_info;
+ struct working_area *source;
+ uint32_t buffer_size = 32768;
+ uint32_t status;
+ int retval = ERROR_OK;
+
+ /* input parameters - */
+ /* 4 A0 = source address */
+ /* 5 A1 = destination address */
+ /* 6 A2 = number of writes */
+ /* 7 A3 = flash write command */
+ /* 8 T0 = constant to mask DQ7 bits (also used for Dq5 with shift) */
+ /* output parameters - */
+ /* 9 T1 = 0x80 ok 0x00 bad */
+ /* temp registers - */
+ /* 10 T2 = value read from flash to test status */
+ /* 11 T3 = holding register */
+ /* unlock registers - */
+ /* 12 T4 = unlock1_addr */
+ /* 13 T5 = unlock1_cmd */
+ /* 14 T6 = unlock2_addr */
+ /* 15 T7 = unlock2_cmd */
+
+ static const uint32_t mips_word_16_code[] = {
+ /* start: */
+ MIPS32_LHU(9,0,4), /* lhu $t1, ($a0) ; out = &saddr */
+ MIPS32_ADDI(4,4,2), /* addi $a0, $a0, 2 ; saddr += 2 */
+ MIPS32_SH(13,0,12), /* sh $t5, ($t4) ; *fl_unl_addr1 = fl_unl_cmd1 */
+ MIPS32_SH(15,0,14), /* sh $t7, ($t6) ; *fl_unl_addr2 = fl_unl_cmd2 */
+ MIPS32_SH(7,0,12), /* sh $a3, ($t4) ; *fl_unl_addr1 = fl_write_cmd */
+ MIPS32_SH(9,0,5), /* sh $t1, ($a1) ; *daddr = out */
+ MIPS32_NOP, /* nop */
+ /* busy: */
+ MIPS32_LHU(10,0,5), /* lhu $t2, ($a1) ; temp1 = *daddr */
+ MIPS32_XOR(11,9,10), /* xor $t3, $a0, $t2 ; temp2 = out ^ temp1; */
+ MIPS32_AND(11,8,11), /* and $t3, $t0, $t3 ; temp2 = temp2 & DQ7mask */
+ MIPS32_BNE(11,8, 13), /* bne $t3, $t0, cont ; if (temp2 != DQ7mask) goto cont */
+ MIPS32_NOP, /* nop */
+
+ MIPS32_SRL(10,8,2), /* srl $t2,$t0,2 ; temp1 = DQ7mask >> 2 */
+ MIPS32_AND(11,10,11), /* and $t3, $t2, $t3 ; temp2 = temp2 & temp1 */
+ MIPS32_BNE(11,10, NEG16(8)), /* bne $t3, $t2, busy ; if (temp2 != temp1) goto busy */
+ MIPS32_NOP, /* nop */
+
+ MIPS32_LHU(10,0,5), /* lhu $t2, ($a1) ; temp1 = *daddr */
+ MIPS32_XOR(11,9,10), /* xor $t3, $a0, $t2 ; temp2 = out ^ temp1; */
+ MIPS32_AND(11,8,11), /* and $t3, $t0, $t3 ; temp2 = temp2 & DQ7mask */
+ MIPS32_BNE(11,8, 4), /* bne $t3, $t0, cont ; if (temp2 != DQ7mask) goto cont */
+ MIPS32_NOP, /* nop */
+
+ MIPS32_XOR(9,9,9), /* xor $t1, $t1, $t1 ; out = 0 */
+ MIPS32_BEQ(9,0, 11), /* beq $t1, $zero, done ; if (out == 0) goto done */
+ MIPS32_NOP, /* nop */
+ /* cont: */
+ MIPS32_ADDI(6,6,NEG16(1)), /* addi, $a2, $a2, -1 ; numwrites-- */
+ MIPS32_BNE(6,0, 5), /* bne $a2, $zero, cont2 ; if (numwrite != 0) goto cont2 */
+ MIPS32_NOP, /* nop */
+
+ MIPS32_LUI(9,0), /* lui $t1, 0 */
+ MIPS32_ORI(9,9,0x80), /* ori $t1, $t1, 0x80 ; out = 0x80 */
+
+ MIPS32_B(4), /* b done ; goto done */
+ MIPS32_NOP, /* nop */
+ /* cont2: */
+ MIPS32_ADDI(5,5,2), /* addi $a0, $a0, 2 ; daddr += 2 */
+ MIPS32_B(NEG16(33)), /* b start ; goto start */
+ MIPS32_NOP, /* nop */
+ /* done: */
+ /*MIPS32_B(NEG16(1)), */ /* b done ; goto done */
+ MIPS32_SDBBP, /* sdbbp ; break(); */
+ /*MIPS32_B(NEG16(33)), */ /* b start ; goto start */
+ /* MIPS32_NOP, */
+ };
+
+ mips32_info.common_magic = MIPS32_COMMON_MAGIC;
+ mips32_info.isa_mode = MIPS32_ISA_MIPS32;
+
+ int target_code_size = 0;
+ const uint32_t *target_code_src = NULL;
+
+ switch (bank->bus_width)
+ {
+ case 2 :
+ /* Check for DQ5 support */
+ if( cfi_info->status_poll_mask & (1 << 5) )
+ {
+ target_code_src = mips_word_16_code;
+ target_code_size = sizeof(mips_word_16_code);
+ }
+ else
+ {
+ LOG_ERROR("Need DQ5 support");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ //target_code_src = mips_word_16_code_dq7only;
+ //target_code_size = sizeof(mips_word_16_code_dq7only);
+ }
+ break;
+ default:
+ LOG_ERROR("Unsupported bank buswidth %d, can't do block memory writes", bank->bus_width);
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+
+ /* flash write code */
+ if (!cfi_info->write_algorithm)
+ {
+ uint8_t *target_code;
+
+ /* convert bus-width dependent algorithm code to correct endiannes */
+ target_code = malloc(target_code_size);
+ if (target_code == NULL)
+ {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+ cfi_fix_code_endian(target, target_code, target_code_src, target_code_size / 4);
+
+ /* allocate working area */
+ retval = target_alloc_working_area(target, target_code_size,
+ &cfi_info->write_algorithm);
+ if (retval != ERROR_OK)
+ {
+ free(target_code);
+ return retval;
+ }
+
+ /* write algorithm code to working area */
+ if ((retval = target_write_buffer(target, cfi_info->write_algorithm->address,
+ target_code_size, target_code)) != ERROR_OK)
+ {
+ free(target_code);
+ return retval;
+ }
+
+ free(target_code);
+ }
+ /* the following code still assumes target code is fixed 24*4 bytes */
+
+ while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK)
+ {
+ buffer_size /= 2;
+ if (buffer_size <= 256)
+ {
+ /* if we already allocated the writing code, but failed to get a
+ * buffer, free the algorithm */
+ if (cfi_info->write_algorithm)
+ target_free_working_area(target, cfi_info->write_algorithm);
+
+ LOG_WARNING("not enough working area available, can't do block memory writes");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ };
+
+ init_reg_param(&reg_params[0], "a0", 32, PARAM_OUT);
+ init_reg_param(&reg_params[1], "a1", 32, PARAM_OUT);
+ init_reg_param(&reg_params[2], "a2", 32, PARAM_OUT);
+ init_reg_param(&reg_params[3], "a3", 32, PARAM_OUT);
+ init_reg_param(&reg_params[4], "t0", 32, PARAM_OUT);
+ init_reg_param(&reg_params[5], "t1", 32, PARAM_IN);
+ init_reg_param(&reg_params[6], "t4", 32, PARAM_OUT);
+ init_reg_param(&reg_params[7], "t5", 32, PARAM_OUT);
+ init_reg_param(&reg_params[8], "t6", 32, PARAM_OUT);
+ init_reg_param(&reg_params[9], "t7", 32, PARAM_OUT);
+
+ while (count > 0)
+ {
+ uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
+
+ retval = target_write_buffer(target, source->address, thisrun_count, buffer);
+ if (retval != ERROR_OK)
+ {
+ break;
+ }
+
+ buf_set_u32(reg_params[0].value, 0, 32, source->address);
+ buf_set_u32(reg_params[1].value, 0, 32, address);
+ buf_set_u32(reg_params[2].value, 0, 32, thisrun_count / bank->bus_width);
+ buf_set_u32(reg_params[3].value, 0, 32, cfi_command_val(bank, 0xA0));
+ buf_set_u32(reg_params[4].value, 0, 32, cfi_command_val(bank, 0x80));
+ buf_set_u32(reg_params[6].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock1));
+ buf_set_u32(reg_params[7].value, 0, 32, 0xaaaaaaaa);
+ buf_set_u32(reg_params[8].value, 0, 32, flash_address(bank, 0, pri_ext->_unlock2));
+ buf_set_u32(reg_params[9].value, 0, 32, 0x55555555);
+
+ retval = target_run_algorithm(target, 0, NULL, 10, reg_params,
+ cfi_info->write_algorithm->address,
+ cfi_info->write_algorithm->address + ((target_code_size) - 4),
+ 10000, &mips32_info);
+ if (retval != ERROR_OK)
+ {
+ break;
+ }
+
+ status = buf_get_u32(reg_params[5].value, 0, 32);
+ if (status != 0x80)
+ {
+ LOG_ERROR("flash write block failed status: 0x%" PRIx32 , status);
+ retval = ERROR_FLASH_OPERATION_FAILED;
+ break;
+ }
+
+ buffer += thisrun_count;
+ address += thisrun_count;
+ count -= thisrun_count;
+ }
+
+ target_free_all_working_areas(target);
+
+ 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]);
+ destroy_reg_param(&reg_params[5]);
+ destroy_reg_param(&reg_params[6]);
+ destroy_reg_param(&reg_params[7]);
+ destroy_reg_param(&reg_params[8]);
+ destroy_reg_param(&reg_params[9]);
+
+ return retval;
+}
+
static int cfi_spansion_write_block(struct flash_bank *bank, uint8_t *buffer,
uint32_t address, uint32_t count)
{
@@ -1637,6 +1872,11 @@ static int cfi_spansion_write_block(struct flash_bank *bank, uint8_t *buffer,
0xeafffffe /* b 8204 <sp_8_done> */
};
+ if (strncmp(target_type_name(target),"mips_m4k",8) == 0)
+ {
+ return cfi_spansion_write_block_mips(bank,buffer,address,count);
+ }
+
if (is_armv7m(target_to_armv7m(target))) /* Cortex-M3 target */
{
armv4_5_info.common_magic = ARMV7M_COMMON_MAGIC;
diff --git a/src/target/mips32.h b/src/target/mips32.h
index 0d544a40..4f0f0ef0 100644
--- a/src/target/mips32.h
+++ b/src/target/mips32.h
@@ -110,6 +110,8 @@ struct mips32_algorithm
#define MIPS32_OP_SH 0x29
#define MIPS32_OP_SW 0x2B
#define MIPS32_OP_ORI 0x0D
+#define MIPS32_OP_XOR 0x26
+#define MIPS32_OP_SRL 0x03
#define MIPS32_COP0_MF 0x00
#define MIPS32_COP0_MT 0x04
@@ -135,10 +137,12 @@ struct mips32_algorithm
#define MIPS32_MFHI(reg) MIPS32_R_INST(0, 0, 0, reg, 0, MIPS32_OP_MFHI)
#define MIPS32_MTLO(reg) MIPS32_R_INST(0, reg, 0, 0, 0, MIPS32_OP_MTLO)
#define MIPS32_MTHI(reg) MIPS32_R_INST(0, reg, 0, 0, 0, MIPS32_OP_MTHI)
-#define MIPS32_ORI(src, tar, val) MIPS32_I_INST(MIPS32_OP_ORI, src, tar, val)
+#define MIPS32_ORI(tar, src, val) MIPS32_I_INST(MIPS32_OP_ORI, src, tar, val)
#define MIPS32_SB(reg, off, base) MIPS32_I_INST(MIPS32_OP_SB, base, reg, off)
#define MIPS32_SH(reg, off, base) MIPS32_I_INST(MIPS32_OP_SH, base, reg, off)
#define MIPS32_SW(reg, off, base) MIPS32_I_INST(MIPS32_OP_SW, base, reg, off)
+#define MIPS32_XOR(reg, val1, val2) MIPS32_R_INST(0, val1, val2, reg, 0, MIPS32_OP_XOR)
+#define MIPS32_SRL(reg, src, off) MIPS32_R_INST(0, 0, src, reg, off, MIPS32_OP_SRL)
/* ejtag specific instructions */
#define MIPS32_DRET 0x4200001F
generated by cgit v1.2.3 (git 2.46.0) at 2024-12-23 02:10:23 +0000