Change in coreboot[master]: soc/amd/stoneyridge: Add UMA save function

[Marc Jones (Code Review)]

Marc Jones has uploaded this change for review. ( https://review.coreboot.org/23817

Change subject: soc/amd/stoneyridge: Add UMA save function
......................................................................

soc/amd/stoneyridge: Add UMA save function

Save the UMA values from AGESA to use in resource
allocation in ramstage.

Change-Id: I2a218160649d934f615b2637ff122c36b4ba617e
Signed-off-by: Marc Jones 
---
M src/soc/amd/stoneyridge/include/soc/iomap.h
M src/soc/amd/stoneyridge/include/soc/southbridge.h
M src/soc/amd/stoneyridge/sb_util.c
3 files changed, 58 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/17/23817/1

diff --git a/src/soc/amd/stoneyridge/include/soc/iomap.h b/src/soc/amd/stoneyridge/include/soc/iomap.h
index 2319b88..354a2db 100644
--- a/src/soc/amd/stoneyridge/include/soc/iomap.h
+++ b/src/soc/amd/stoneyridge/include/soc/iomap.h
@@ -68,5 +68,7 @@

/* 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		0xfa /* 8 bytes */

#endif /* __SOC_STONEYRIDGE_IOMAP_H__ */
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index df78608..df1d755 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -340,6 +340,38 @@
 uint32_t xhci_pm_read32(uint8_t reg);
 void bootblock_fch_early_init(void);
 /**
+ * @brief Save the UMA bize returned by AGESA
+ *
+ * @param size = in bytes
+ *
+ * @return none
+ */
+void save_uma_size(uint32_t size);
+/**
+ * @brief Save the UMA base address returned by AGESA
+ *
+ * @param base = 64bit base address
+ *
+ * @return none
+ */
+void save_uma_base(uint64_t base);
+/**
+ * @brief Get the saved UMA size
+ *
+ * @param none
+ *
+ * @return size in bytes
+ */
+int32_t get_uma_size(void);
+/**
+ * @brief Get the saved UMA base
+ *
+ * @param none
+ *
+ * @return 64bit base address
+ */
+int64_t get_uma_base(void);
+/**
  * @brief program a particular set of GPIO
  *
  * @param gpio_ptr = pointer to array of gpio configurations
diff --git a/src/soc/amd/stoneyridge/sb_util.c b/src/soc/amd/stoneyridge/sb_util.c
index a98a334..eda3fc8 100644
--- a/src/soc/amd/stoneyridge/sb_util.c
+++ b/src/soc/amd/stoneyridge/sb_util.c
@@ -164,3 +164,27 @@
 {
    return acpi_sleep_from_pm1(inw(pm_acpi_pm_cnt_blk()));
 }
+
+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));
+}
+
+int32_t get_uma_size(void)
+{
+	return biosram_read32(BIOSRAM_UMA_SIZE);
+}
+
+int64_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;
+}