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-rw-r--r--src/soc/amd/stoneyridge/include/soc/iomap.h2
-rw-r--r--src/soc/amd/stoneyridge/include/soc/southbridge.h32
-rw-r--r--src/soc/amd/stoneyridge/sb_util.c24
3 files changed, 58 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/iomap.h b/src/soc/amd/stoneyridge/include/soc/iomap.h
index 2319b883d7..8dc27fb701 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 0xf8 /* 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 df78608cbb..3489afc0f9 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -340,6 +340,38 @@ void xhci_pm_write32(uint8_t reg, uint32_t value);
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
+ */
+uint32_t get_uma_size(void);
+/**
+ * @brief Get the saved UMA base
+ *
+ * @param none
+ *
+ * @return 64bit base address
+ */
+uint64_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 a98a334fe2..26c86e8238 100644
--- a/src/soc/amd/stoneyridge/sb_util.c
+++ b/src/soc/amd/stoneyridge/sb_util.c
@@ -164,3 +164,27 @@ int acpi_get_sleep_type(void)
{
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));
+}
+
+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;
+}