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 <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/23817
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 34 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