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authorSiyuan Wang <wangsiyuanbuaa@gmail.com>2013-06-08 10:25:06 +0800
committerRonald G. Minnich <rminnich@gmail.com>2013-06-29 18:57:42 +0200
commit0d8d482f6316885d7e553d9aeb538ce5bbd2fbba (patch)
tree9fb17f68b76d5b04169a94eb9ab7e3e8dfa41968 /src/cpu/amd/agesa
parentbc2c9efd56a1b7d5c9b97132423ac176b4d21b74 (diff)
AMD S3 resume: Add framwork to write bigger data
This patch is based on 'AMD S3: Program the flash in a bigger data packet'[1] Some AMD south bridge can write bigger data when saving S3 info. In this patch, I use config 'AMD_SB_SPI_TX_LEN' to contral data size. AMD_SB_SPI_TX_LEN is defined in 'src/southbridge/amd/Kconfig' and then can be overridden in the Kconfig for specific southbridges that support larger size. I have tested on AMD Parmer and Thatcher. We will release a new board whose south bridge can transfer more than 4 bytes each time. [1] http://review.coreboot.org/#/c/2306/ Change-Id: Id984955d46eae487e39d45979f1a90054aa9f54b Signed-off-by: Siyuan Wang <SiYuan.Wang@amd.com> Signed-off-by: Siyuan Wang <wangsiyuanbuaa@gmail.com> Reviewed-on: http://review.coreboot.org/3413 Tested-by: build bot (Jenkins) Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/cpu/amd/agesa')
-rw-r--r--src/cpu/amd/agesa/s3_resume.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/cpu/amd/agesa/s3_resume.c b/src/cpu/amd/agesa/s3_resume.c
index 8a9ffeea63..6ba9212ab4 100644
--- a/src/cpu/amd/agesa/s3_resume.c
+++ b/src/cpu/amd/agesa/s3_resume.c
@@ -152,10 +152,16 @@ void write_mtrr(struct spi_flash *flash, u32 *p_nvram_pos, unsigned idx)
{
msr_t msr_data;
msr_data = rdmsr(idx);
+
+#if CONFIG_AMD_SB_SPI_TX_LEN >= 8
+ flash->write(flash, *p_nvram_pos, 8, &msr_data);
+ *p_nvram_pos += 8;
+#else
flash->write(flash, *p_nvram_pos, 4, &msr_data.lo);
*p_nvram_pos += 4;
flash->write(flash, *p_nvram_pos, 4, &msr_data.hi);
*p_nvram_pos += 4;
+#endif
}
#endif
@@ -264,10 +270,11 @@ u32 OemAgesaSaveS3Info(S3_DATA_TYPE S3DataType, u32 DataSize, void *Data)
nvram_pos = 0;
flash->write(flash, nvram_pos + pos, sizeof(DataSize), &DataSize);
- for (nvram_pos = 0; nvram_pos < DataSize; nvram_pos += 4) {
+ for (nvram_pos = 0; nvram_pos < DataSize - CONFIG_AMD_SB_SPI_TX_LEN; nvram_pos += CONFIG_AMD_SB_SPI_TX_LEN) {
data = *(u32 *) (Data + nvram_pos);
- flash->write(flash, nvram_pos + pos + 4, sizeof(u32), (u32 *)(Data + nvram_pos));
+ flash->write(flash, nvram_pos + pos + 4, CONFIG_AMD_SB_SPI_TX_LEN, (u8 *)(Data + nvram_pos));
}
+ flash->write(flash, nvram_pos + pos + 4, DataSize % CONFIG_AMD_SB_SPI_TX_LEN, (u8 *)(Data + nvram_pos));
flash->spi->rw = SPI_WRITE_FLAG;
spi_release_bus(flash->spi);