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-rw-r--r--src/soc/amd/common/block/acpimmio/Makefile.inc7
-rw-r--r--src/soc/amd/common/block/acpimmio/biosram.c50
-rw-r--r--src/soc/amd/common/block/include/amdblocks/biosram.h33
-rw-r--r--src/soc/amd/common/block/pi/agesawrapper.c2
4 files changed, 91 insertions, 1 deletions
diff --git a/src/soc/amd/common/block/acpimmio/Makefile.inc b/src/soc/amd/common/block/acpimmio/Makefile.inc
index 9517b10b8a..69253b9203 100644
--- a/src/soc/amd/common/block/acpimmio/Makefile.inc
+++ b/src/soc/amd/common/block/acpimmio/Makefile.inc
@@ -4,3 +4,10 @@ romstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += mmio_util.c
postcar-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += mmio_util.c
ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += mmio_util.c
smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += mmio_util.c
+
+bootblock-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
+verstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
+romstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
+postcar-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
+ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
+smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO) += biosram.c
diff --git a/src/soc/amd/common/block/acpimmio/biosram.c b/src/soc/amd/common/block/acpimmio/biosram.c
new file mode 100644
index 0000000000..f0a1257fb9
--- /dev/null
+++ b/src/soc/amd/common/block/acpimmio/biosram.c
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <cbmem.h>
+#include <amdblocks/acpimmio.h>
+#include <amdblocks/biosram.h>
+
+void backup_top_of_low_cacheable(uintptr_t ramtop)
+{
+ biosram_write32(BIOSRAM_CBMEM_TOP, ramtop);
+}
+
+uintptr_t restore_top_of_low_cacheable(void)
+{
+ return biosram_read32(BIOSRAM_CBMEM_TOP);
+}
+
+void save_uma_size(uint32_t size)
+{
+ biosram_write32(BIOSRAM_UMA_SIZE, size);
+}
+
+void save_uma_base(uint64_t base)
+{
+ biosram_write32(BIOSRAM_UMA_BASE, (uint32_t) base);
+ biosram_write32(BIOSRAM_UMA_BASE + 4, (uint32_t) (base >> 32));
+}
+
+uint32_t get_uma_size(void)
+{
+ return biosram_read32(BIOSRAM_UMA_SIZE);
+}
+
+uint64_t get_uma_base(void)
+{
+ uint64_t base;
+ base = biosram_read32(BIOSRAM_UMA_BASE);
+ base |= ((uint64_t)(biosram_read32(BIOSRAM_UMA_BASE + 4)) << 32);
+ return base;
+}
diff --git a/src/soc/amd/common/block/include/amdblocks/biosram.h b/src/soc/amd/common/block/include/amdblocks/biosram.h
new file mode 100644
index 0000000000..e2c1eb33f7
--- /dev/null
+++ b/src/soc/amd/common/block/include/amdblocks/biosram.h
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __AMDBLOCKS_BIOSRAM_H__
+#define __AMDBLOCKS_BIOSRAM_H__
+
+#include <stdint.h>
+
+/* BiosRam Ranges at 0xfed80500 or I/O 0xcd4/0xcd5 */
+#define BIOSRAM_CBMEM_TOP 0xf0 /* 4 bytes */
+#define BIOSRAM_UMA_SIZE 0xf4 /* 4 bytes */
+#define BIOSRAM_UMA_BASE 0xf8 /* 8 bytes */
+
+/* Saves the UMA size returned by AGESA */
+void save_uma_size(uint32_t size);
+/* Saves the UMA base address returned by AGESA */
+void save_uma_base(uint64_t base);
+/* Returns the saved UMA size */
+uint32_t get_uma_size(void);
+/* Returns the saved UMA base */
+uint64_t get_uma_base(void);
+
+#endif
diff --git a/src/soc/amd/common/block/pi/agesawrapper.c b/src/soc/amd/common/block/pi/agesawrapper.c
index c5464df834..45842168de 100644
--- a/src/soc/amd/common/block/pi/agesawrapper.c
+++ b/src/soc/amd/common/block/pi/agesawrapper.c
@@ -18,11 +18,11 @@
#include <cbmem.h>
#include <console/console.h>
#include <timestamp.h>
+#include <amdblocks/biosram.h>
#include <amdblocks/s3_resume.h>
#include <amdblocks/agesawrapper.h>
#include <amdblocks/BiosCallOuts.h>
#include <soc/pci_devs.h>
-#include <soc/southbridge.h>
#include <soc/northbridge.h>
#include <soc/cpu.h>