[flashrom] [PATCH] Convert SPI chip erase to multicommand
Carl-Daniel Hailfinger
c-d.hailfinger.devel.2006 at gmx.net
Sat Jul 11 02:58:44 CEST 2009
On 11.07.2009 02:07, Carl-Daniel Hailfinger wrote:
> Convert SPI chip erase to use the multicommand infrastructure.
>
This patch should work even on ICH/VIA SPI.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Index: flashrom-spi_multicommand_chiperase/spi.c
===================================================================
--- flashrom-spi_multicommand_chiperase/spi.c (Revision 645)
+++ flashrom-spi_multicommand_chiperase/spi.c (Arbeitskopie)
@@ -61,12 +61,30 @@
int spi_send_multicommand(struct spi_command *spicommands)
{
- int res = 0;
- while ((spicommands->writecnt || spicommands->readcnt) && !res) {
- res = spi_send_command(spicommands->writecnt, spicommands->readcnt,
+ int ret = 0;
+ while ((spicommands->writecnt || spicommands->readcnt) && !ret) {
+ ret = spi_send_command(spicommands->writecnt, spicommands->readcnt,
spicommands->writearr, spicommands->readarr);
+ /* This awful hack needs to be replaced with a multicommand
+ * capable ICH/VIA SPI driver.
+ */
+ if ((ret == SPI_INVALID_OPCODE) &&
+ ((spicommands->writearr[0] == JEDEC_WREN) ||
+ (spicommands->writearr[0] == JEDEC_EWSR))) {
+ switch (spi_controller) {
+ case SPI_CONTROLLER_ICH7:
+ case SPI_CONTROLLER_ICH9:
+ case SPI_CONTROLLER_VIA:
+ printf_debug(" due to SPI master limitation, ignoring"
+ " and hoping it will be run as PREOP\n");
+ ret = 0;
+ default:
+ break;
+ }
+ }
+ spicommands++;
}
- return res;
+ return ret;
}
static int spi_rdid(unsigned char *readarr, int bytes)
@@ -417,21 +435,34 @@
int spi_chip_erase_60(struct flashchip *flash)
{
- const unsigned char cmd[JEDEC_CE_60_OUTSIZE] = {JEDEC_CE_60};
int result;
+ struct spi_command spicommands[] = {
+ {
+ .writecnt = JEDEC_WREN_OUTSIZE,
+ .writearr = (const unsigned char[]){ JEDEC_WREN },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = JEDEC_CE_60_OUTSIZE,
+ .writearr = (const unsigned char[]){ JEDEC_CE_60 },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = 0,
+ .writearr = NULL,
+ .readcnt = 0,
+ .readarr = NULL,
+ }};
result = spi_disable_blockprotect();
if (result) {
printf_debug("spi_disable_blockprotect failed\n");
return result;
}
- result = spi_write_enable();
- if (result)
- return result;
- /* Send CE (Chip Erase) */
- result = spi_send_command(sizeof(cmd), 0, cmd, NULL);
+
+ result = spi_send_multicommand(spicommands);
if (result) {
- printf_debug("spi_chip_erase_60 failed sending erase\n");
+ printf_debug("%s failed during command execution\n", __func__);
return result;
}
/* Wait until the Write-In-Progress bit is cleared.
@@ -449,21 +480,34 @@
int spi_chip_erase_c7(struct flashchip *flash)
{
- const unsigned char cmd[JEDEC_CE_C7_OUTSIZE] = { JEDEC_CE_C7 };
int result;
+ struct spi_command spicommands[] = {
+ {
+ .writecnt = JEDEC_WREN_OUTSIZE,
+ .writearr = (const unsigned char[]){ JEDEC_WREN },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = JEDEC_CE_C7_OUTSIZE,
+ .writearr = (const unsigned char[]){ JEDEC_CE_C7 },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = 0,
+ .writearr = NULL,
+ .readcnt = 0,
+ .readarr = NULL,
+ }};
result = spi_disable_blockprotect();
if (result) {
printf_debug("spi_disable_blockprotect failed\n");
return result;
}
- result = spi_write_enable();
- if (result)
- return result;
- /* Send CE (Chip Erase) */
- result = spi_send_command(sizeof(cmd), 0, cmd, NULL);
+
+ result = spi_send_multicommand(spicommands);
if (result) {
- printf_debug("spi_chip_erase_60 failed sending erase\n");
+ printf_debug("%s failed during command execution\n", __func__);
return result;
}
/* Wait until the Write-In-Progress bit is cleared.
--
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