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Convert SPI chips to partial write

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However, wrap the write functions in a compat layer to allow converting
the rest of flashrom later. Tested on Intel NM10 by David Hendricks.

Corresponding to flashrom svn r1080.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
This commit is contained in:
Carl-Daniel Hailfinger
2010-07-14 16:19:05 +00:00
parent 1748c5701f
commit 9a795d83fb
13 changed files with 126 additions and 130 deletions
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42
it87spi.c
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@ -292,7 +292,7 @@ int it8716f_spi_send_command(unsigned int writecnt, unsigned int readcnt,
}
/* Page size is usually 256 bytes */
static int it8716f_spi_page_program(struct flashchip *flash, int block, uint8_t *buf)
static int it8716f_spi_page_program(struct flashchip *flash, uint8_t *buf, int start)
{
int i;
int result;
@ -305,7 +305,7 @@ static int it8716f_spi_page_program(struct flashchip *flash, int block, uint8_t
OUTB(0x06, it8716f_flashport + 1);
OUTB(((2 + (fast_spi ? 1 : 0)) << 4), it8716f_flashport);
for (i = 0; i < 256; i++) {
chip_writeb(buf[256 * block + i], bios + 256 * block + i);
chip_writeb(buf[i], bios + start + i);
}
OUTB(0, it8716f_flashport);
/* Wait until the Write-In-Progress bit is cleared.
@ -334,29 +334,39 @@ int it8716f_spi_chip_read(struct flashchip *flash, uint8_t *buf, int start, int
return 0;
}
int it8716f_spi_chip_write_256(struct flashchip *flash, uint8_t *buf)
int it8716f_spi_chip_write_256(struct flashchip *flash, uint8_t *buf, int start, int len)
{
int total_size = 1024 * flash->total_size;
int i;
/*
* IT8716F only allows maximum of 512 kb SPI chip size for memory
* mapped access.
*/
if ((programmer == PROGRAMMER_IT87SPI) || (total_size > 512 * 1024)) {
spi_chip_write_1(flash, buf);
if ((programmer == PROGRAMMER_IT87SPI) || (flash->total_size * 1024 > 512 * 1024)) {
spi_chip_write_1_new(flash, buf, start, len);
} else {
int lenhere;
spi_disable_blockprotect();
/* Erase first */
msg_pinfo("Erasing flash before programming... ");
if (erase_flash(flash)) {
msg_perr("ERASE FAILED!\n");
return -1;
if (start % 256) {
/* start to the end of the page or start + len,
* whichever is smaller. Page length is hardcoded to
* 256 bytes (IT87 SPI hardware limitation).
*/
lenhere = min(len, (start | 0xff) - start + 1);
spi_chip_write_1_new(flash, buf, start, lenhere);
start += lenhere;
len -= lenhere;
buf += lenhere;
}
msg_pinfo("done.\n");
for (i = 0; i < total_size / 256; i++) {
it8716f_spi_page_program(flash, i, buf);
/* FIXME: Handle chips which have max writechunk size >1 and <256. */
while (len >= 256) {
it8716f_spi_page_program(flash, buf, start);
start += 256;
len -= 256;
buf += 256;
}
if (len)
spi_chip_write_1_new(flash, buf, start, len);
}
return 0;