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soc/amd/stoneyridge: Add UMA settings to devicetree 

Add three settings for the UMA configuration to correspond with
definitions in AGESA.h.
 * UMA off, Auto, or size specified
 * Size (if specified above)
 * Legacy vs. non-legacy (if Auto)

BUG=b:64927639

Change-Id: I38b6603f365fdc1f1f615794365476f749e58be7
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21334
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Aaron Durbin 2017-11-10 13:16:23 -07:00
parent bf131b2616
commit 36dbf1d74a
2 changed files with 39 additions and 0 deletions
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16
src/soc/amd/stoneyridge/chip.h
View File

@ -16,7 +16,9 @@
#ifndef __STONEYRIDGE_CHIP_H__
#define __STONEYRIDGE_CHIP_H__
#include <stddef.h>
#include <stdint.h>
#include <commonlib/helpers.h>
#define MAX_NODES 1
#define MAX_DRAM_CH 1
@ -28,6 +30,20 @@ struct soc_amd_stoneyridge_config {
DRAM_CONTENTS_KEEP,
DRAM_CONTENTS_CLEAR
} dram_clear_on_reset;
enum {
/* Do not enable UMA in the system. */
UMAMODE_NONE,
/* Enable UMA with a specific size. */
UMAMODE_SPECIFIED_SIZE,
/* Let AGESA determine the proper size. Non-legacy requires
* the resolution to be specified PLATFORM_CONFIGURATION */
UMAMODE_AUTO_LEGACY,
UMAMODE_AUTO_NON_LEGACY,
} uma_mode;
/* Used if UMAMODE_SPECIFIED_SIZE is set. */
size_t uma_size;
};
typedef struct soc_amd_stoneyridge_config config_t;

23
src/soc/amd/stoneyridge/romstage.c
View File

@ -119,9 +119,32 @@ void SetMemParams(AMD_POST_PARAMS *PostParams)
if (!dev || !dev->chip_info) {
printk(BIOS_ERR, "ERROR: Could not find SoC devicetree config\n");
/* In case of a BIOS error, only attempt to set UMA. */
PostParams->MemConfig.UmaMode = IS_ENABLED(CONFIG_GFXUMA) ?
UMA_AUTO : UMA_NONE;
return;
}
cfg = dev->chip_info;
PostParams->MemConfig.EnableMemClr = cfg->dram_clear_on_reset;
switch (cfg->uma_mode) {
case UMAMODE_NONE:
PostParams->MemConfig.UmaMode = UMA_NONE;
break;
case UMAMODE_SPECIFIED_SIZE:
PostParams->MemConfig.UmaMode = UMA_SPECIFIED;
/* 64 KiB blocks. */
PostParams->MemConfig.UmaSize = cfg->uma_size / (64 * KiB);
break;
case UMAMODE_AUTO_LEGACY:
PostParams->MemConfig.UmaMode = UMA_AUTO;
PostParams->MemConfig.UmaVersion = UMA_LEGACY;
break;
case UMAMODE_AUTO_NON_LEGACY:
PostParams->MemConfig.UmaMode = UMA_AUTO;
PostParams->MemConfig.UmaVersion = UMA_NON_LEGACY;
break;
}
}