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Diffstat (limited to 'util/flashrom/ichspi.c')
-rw-r--r--util/flashrom/ichspi.c70
1 files changed, 44 insertions, 26 deletions
diff --git a/util/flashrom/ichspi.c b/util/flashrom/ichspi.c
index 7cc9ca7433..91a3842b2f 100644
--- a/util/flashrom/ichspi.c
+++ b/util/flashrom/ichspi.c
@@ -41,8 +41,6 @@
#include "flash.h"
#include "spi.h"
-#define MAXDATABYTES 0x40
-
/* ICH9 controller register definition */
#define ICH9_REG_FADDR 0x08 /* 32 Bits */
#define ICH9_REG_FDATA0 0x10 /* 64 Bytes */
@@ -81,11 +79,21 @@
#define SPIS_CDS 0x00000004
#define SPIS_FCERR 0x00000008
+/* VIA SPI is compatible with ICH7, but maxdata
+ to transfer is 16 bytes.
+
+ DATA byte count on ICH7 is 8:13, on VIA 8:11
+
+ bit 12 is port select CS0 CS1
+ bit 13 is FAST READ enable
+ bit 7 is used with fast read and one shot controls CS de-assert?
+*/
+
#define ICH7_REG_SPIC 0x02 /* 16 Bits */
#define SPIC_SCGO 0x0002
#define SPIC_ACS 0x0004
#define SPIC_SPOP 0x0008
-#define SPIC_DS 0x4000
+#define SPIC_DS 0x4000
#define ICH7_REG_SPIA 0x04 /* 32 Bits */
#define ICH7_REG_SPID0 0x08 /* 64 Bytes */
@@ -143,9 +151,9 @@ static int program_opcodes(OPCODES * op);
static int run_opcode(uint8_t nr, OPCODE op, uint32_t offset,
uint8_t datalength, uint8_t * data);
static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf,
- int offset);
+ int offset, int maxdata);
static int ich_spi_write_page(struct flashchip *flash, uint8_t * bytes,
- int offset);
+ int offset, int maxdata);
static int ich_spi_erase_block(struct flashchip *flash, int offset);
OPCODES O_ST_M25P = {
@@ -176,7 +184,7 @@ int program_opcodes(OPCODES * op)
temp16 = (op->preop[0]);
/* 8:16 Prefix Opcode 2 */
temp16 |= ((uint16_t) op->preop[1]) << 8;
- if (ich7_detected) {
+ if ((ich7_detected) || (viaspi_detected)) {
REGWRITE16(ICH7_REG_PREOP, temp16);
} else if (ich9_detected) {
REGWRITE16(ICH9_REG_PREOP, temp16);
@@ -188,7 +196,7 @@ int program_opcodes(OPCODES * op)
temp16 |= ((uint16_t) op->opcode[a].spi_type) << (a * 2);
}
- if (ich7_detected) {
+ if ((ich7_detected) || (viaspi_detected)) {
REGWRITE16(ICH7_REG_OPTYPE, temp16);
} else if (ich9_detected) {
REGWRITE16(ICH9_REG_OPTYPE, temp16);
@@ -201,7 +209,7 @@ int program_opcodes(OPCODES * op)
temp32 |= ((uint32_t) op->opcode[a].opcode) << (a * 8);
}
- if (ich7_detected) {
+ if ((ich7_detected) || (viaspi_detected)) {
REGWRITE32(ICH7_REG_OPMENU, temp32);
} else if (ich9_detected) {
REGWRITE32(ICH9_REG_OPMENU, temp32);
@@ -215,7 +223,7 @@ int program_opcodes(OPCODES * op)
((uint32_t) op->opcode[a].opcode) << ((a - 4) * 8);
}
- if (ich7_detected) {
+ if ((ich7_detected) || (viaspi_detected)) {
REGWRITE32(ICH7_REG_OPMENU + 4, temp32);
} else if (ich9_detected) {
REGWRITE32(ICH9_REG_OPMENU + 4, temp32);
@@ -225,7 +233,7 @@ int program_opcodes(OPCODES * op)
}
static int ich7_run_opcode(uint8_t nr, OPCODE op, uint32_t offset,
- uint8_t datalength, uint8_t * data)
+ uint8_t datalength, uint8_t * data, int maxdata)
{
int write_cmd = 0;
int timeout;
@@ -275,7 +283,7 @@ static int ich7_run_opcode(uint8_t nr, OPCODE op, uint32_t offset,
if (datalength != 0) {
temp16 |= SPIC_DS;
- temp16 |= ((uint16_t) ((datalength - 1) & 0x3f)) << 8;
+ temp16 |= ((uint32_t) ((datalength - 1) & (maxdata - 1))) << 8;
}
/* Select opcode */
@@ -431,10 +439,11 @@ static int run_opcode(uint8_t nr, OPCODE op, uint32_t offset,
uint8_t datalength, uint8_t * data)
{
if (ich7_detected)
- return ich7_run_opcode(nr, op, offset, datalength, data);
- else if (ich9_detected) {
+ return ich7_run_opcode(nr, op, offset, datalength, data, 64);
+ else if (viaspi_detected)
+ return ich7_run_opcode(nr, op, offset, datalength, data, 16);
+ else if (ich9_detected)
return ich9_run_opcode(nr, op, offset, datalength, data);
- }
/* If we ever get here, something really weird happened */
return -1;
@@ -455,7 +464,7 @@ static int ich_spi_erase_block(struct flashchip *flash, int offset)
return 0;
}
-static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf, int offset)
+static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf, int offset, int maxdata)
{
int page_size = flash->page_size;
uint32_t remaining = flash->page_size;
@@ -464,8 +473,8 @@ static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf, int offset)
printf_debug("ich_spi_read_page: offset=%d, number=%d, buf=%p\n",
offset, page_size, buf);
- for (a = 0; a < page_size; a += MAXDATABYTES) {
- if (remaining < MAXDATABYTES) {
+ for (a = 0; a < page_size; a += maxdata) {
+ if (remaining < maxdata) {
if (run_opcode
(1, curopcodes->opcode[1],
@@ -478,12 +487,12 @@ static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf, int offset)
} else {
if (run_opcode
(1, curopcodes->opcode[1],
- offset + (page_size - remaining), MAXDATABYTES,
+ offset + (page_size - remaining), maxdata,
&buf[page_size - remaining]) != 0) {
printf_debug("Error reading");
return 1;
}
- remaining -= MAXDATABYTES;
+ remaining -= maxdata;
}
}
@@ -491,7 +500,7 @@ static int ich_spi_read_page(struct flashchip *flash, uint8_t * buf, int offset)
}
static int ich_spi_write_page(struct flashchip *flash, uint8_t * bytes,
- int offset)
+ int offset, int maxdata)
{
int page_size = flash->page_size;
uint32_t remaining = page_size;
@@ -500,8 +509,8 @@ static int ich_spi_write_page(struct flashchip *flash, uint8_t * bytes,
printf_debug("ich_spi_write_page: offset=%d, number=%d, buf=%p\n",
offset, page_size, bytes);
- for (a = 0; a < page_size; a += MAXDATABYTES) {
- if (remaining < MAXDATABYTES) {
+ for (a = 0; a < page_size; a += maxdata) {
+ if (remaining < maxdata) {
if (run_opcode
(0, curopcodes->opcode[0],
offset + (page_size - remaining), remaining,
@@ -513,12 +522,12 @@ static int ich_spi_write_page(struct flashchip *flash, uint8_t * bytes,
} else {
if (run_opcode
(0, curopcodes->opcode[0],
- offset + (page_size - remaining), MAXDATABYTES,
+ offset + (page_size - remaining), maxdata,
&bytes[page_size - remaining]) != 0) {
printf_debug("Error writing");
return 1;
}
- remaining -= MAXDATABYTES;
+ remaining -= maxdata;
}
}
@@ -530,10 +539,15 @@ int ich_spi_read(struct flashchip *flash, uint8_t * buf)
int i, rc = 0;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
+ int maxdata = 64;
+
+ if (viaspi_detected) {
+ maxdata = 16;
+ }
for (i = 0; (i < total_size / page_size) && (rc == 0); i++) {
rc = ich_spi_read_page(flash, (void *)(buf + i * page_size),
- i * page_size);
+ i * page_size, maxdata);
}
return rc;
@@ -545,6 +559,7 @@ int ich_spi_write(struct flashchip *flash, uint8_t * buf)
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
int erase_size = 64 * 1024;
+ int maxdata = 64;
spi_disable_blockprotect();
@@ -557,9 +572,12 @@ int ich_spi_write(struct flashchip *flash, uint8_t * buf)
break;
}
+ if (viaspi_detected) {
+ maxdata = 16;
+ }
for (j = 0; j < erase_size / page_size; j++) {
ich_spi_write_page(flash, (void *)(buf + (i * erase_size) + (j * page_size)),
- (i * erase_size) + (j * page_size));
+ (i * erase_size) + (j * page_size), maxdata);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 12:46:03 +0000