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This patch adds support for VIA SPI controller on VT8237S. It is similar with

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few documented exceptions to ICH7 SPI controller.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3398 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Rudolf Marek
2008-06-30 21:38:30 +00:00
parent 7b425c1c11
commit 4a17e02003
4 changed files with 71 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
util/flashrom/ichspi.c
View File

@@ -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);
}
}