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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-09-05 18:14:25 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2015-10-27 20:16:29 +0100 |
| commit | 85c39a4ce51f0a33ba1849c85198abdebbd61a41 (patch) | |
| tree | 23a5112265b05871298ef9f96c19e8476e054874 /src/southbridge/amd/sb700/lpc.c | |
| parent | 539aed0646982a5428c87fa2be7926800fbc574a (diff) | |
| download | coreboot-85c39a4ce51f0a33ba1849c85198abdebbd61a41.tar.gz coreboot-85c39a4ce51f0a33ba1849c85198abdebbd61a41.tar.bz2 coreboot-85c39a4ce51f0a33ba1849c85198abdebbd61a41.zip | |
southbridge/amd/sb700: Add Suspend to RAM (S3) support
Change-Id: Ic643e31b721f11a90d8fb5f8c8f8a3b7892c0d73
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11949
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/southbridge/amd/sb700/lpc.c')
| -rw-r--r-- | src/southbridge/amd/sb700/lpc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/southbridge/amd/sb700/lpc.c b/src/southbridge/amd/sb700/lpc.c index 0cc1e8bd3cac..145a01f50d8e 100644 --- a/src/southbridge/amd/sb700/lpc.c +++ b/src/southbridge/amd/sb700/lpc.c @@ -61,10 +61,12 @@ static void lpc_init(device_t dev) isa_dma_init(); #endif - /* Enable DMA transaction on the LPC bus */ - byte = pci_read_config8(dev, 0x40); - byte |= (1 << 2); - pci_write_config8(dev, 0x40, byte); + if (!IS_ENABLED(CONFIG_SOUTHBRIDGE_AMD_SB700_DISABLE_ISA_DMA)) { + /* Enable DMA transaction on the LPC bus */ + byte = pci_read_config8(dev, 0x40); + byte |= (1 << 2); + pci_write_config8(dev, 0x40, byte); + } /* Disable the timeout mechanism on LPC */ byte = pci_read_config8(dev, 0x48); @@ -85,11 +87,13 @@ static void lpc_init(device_t dev) cmos_check_update_date(); } +#if (!IS_ENABLED(CONFIG_EARLY_CBMEM_INIT)) int acpi_get_sleep_type(void) { u16 tmp = inw(ACPI_PM1_CNT_BLK); return ((tmp & (7 << 10)) >> 10); } +#endif #if IS_ENABLED(CONFIG_LATE_CBMEM_INIT) void backup_top_of_ram(uint64_t ramtop) |