From ca6e1f6c04c96c435bdbf30a1b88cab0e5be330b Mon Sep 17 00:00:00 2001 From: Zheng Bao Date: Sun, 17 Feb 2013 17:27:46 +0800 Subject: [PATCH] AMD S3: Program the flash in a bigger data packet According to spi.c in src/southbridge/amd/agesa/hudson readwrite = (bytesin + readoffby1) << 4 | bytesout; We can see that Hudson limits the SPI programming data packet size as 15. We used to write data to SPI in dword mode. It didn't take full advantage of the data packet size. We need to leverage that to speed up programming time. Change-Id: I615e3c8e754e58702247bc26cfffbedaf5827ea8 Signed-off-by: Zheng Bao Signed-off-by: Zheng Bao Reviewed-on: http://review.coreboot.org/2306 Tested-by: build bot (Jenkins) Reviewed-by: Dave Frodin Reviewed-by: Martin Roth --- src/cpu/amd/agesa/s3_resume.c | 56 ++++++++++++++--------------------- 1 file changed, 22 insertions(+), 34 deletions(-) diff --git a/src/cpu/amd/agesa/s3_resume.c b/src/cpu/amd/agesa/s3_resume.c index ee9d7c9f2d..278c1dadf3 100644 --- a/src/cpu/amd/agesa/s3_resume.c +++ b/src/cpu/amd/agesa/s3_resume.c @@ -178,29 +178,21 @@ void OemAgesaSaveMtrr(void) /* Fixed MTRRs */ msr_data = rdmsr(0x250); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; msr_data = rdmsr(0x258); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; msr_data = rdmsr(0x259); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; for (i = 0x268; i < 0x270; i++) { msr_data = rdmsr(i); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; } /* Disable access to AMD RdDram and WrDram extension bits */ @@ -211,32 +203,24 @@ void OemAgesaSaveMtrr(void) /* Variable MTRRs */ for (i = 0x200; i < 0x210; i++) { msr_data = rdmsr(i); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; } /* SYS_CFG */ msr_data = rdmsr(0xC0010010); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; /* TOM */ msr_data = rdmsr(0xC001001A); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; /* TOM2 */ msr_data = rdmsr(0xC001001D); - flash->write(flash, nvram_pos, 4, &msr_data.lo); - nvram_pos += 4; - flash->write(flash, nvram_pos, 4, &msr_data.hi); - nvram_pos += 4; + flash->write(flash, nvram_pos, 8, &msr_data); + nvram_pos += 8; flash->spi->rw = SPI_WRITE_FLAG; spi_release_bus(flash->spi); @@ -290,13 +274,17 @@ u32 OemAgesaSaveS3Info(S3_DATA_TYPE S3DataType, u32 DataSize, void *Data) flash->erase(flash, S3_DATA_VOLATILE_POS, S3_DATA_VOLATILE_SIZE); } +#ifndef SPI_DATA_PACKET_SIZE +#define SPI_DATA_PACKET_SIZE 0xF +#endif 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 - SPI_DATA_PACKET_SIZE; nvram_pos += SPI_DATA_PACKET_SIZE) { 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, SPI_DATA_PACKET_SIZE, (u8 *)(Data + nvram_pos)); } + flash->write(flash, nvram_pos + pos + 4, DataSize % SPI_DATA_PACKET_SIZE, (u8 *)(Data + nvram_pos)); flash->spi->rw = SPI_WRITE_FLAG; spi_release_bus(flash->spi);