[PATCH v4 16/20] siemens: capricorn: get ram size from system controller

[Heiko Schocher]

From: Enrico Leto <enrico.leto at siemens.com>

Get the memory region information from system controller to reduce the
number of platform specific headers. We were aligned on NXP mek board
implementation. This need at least 1 header per memory configuration.

Signed-off-by: Enrico Leto <enrico.leto at siemens.com>
Signed-off-by: Heiko Schocher <hs at denx.de>
---

(no changes since v1)

 board/siemens/capricorn/board.c    | 34 ++++++++++++++++++++++++++++++
 include/configs/capricorn-common.h |  4 +++-
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/board/siemens/capricorn/board.c b/board/siemens/capricorn/board.c
index decac63db3b..484e2707183 100644
--- a/board/siemens/capricorn/board.c
+++ b/board/siemens/capricorn/board.c
@@ -73,6 +73,40 @@ int board_early_init_f(void)
 	return 0;
 }
 
+#ifndef CONFIG_XPL_BUILD
+void board_mem_get_layout(u64 *phys_sdram_1_start,
+			  u64 *phys_sdram_1_size,
+			  u64 *phys_sdram_2_start,
+			  u64 *phys_sdram_2_size)
+{
+	sc_faddr_t addr_start, addr_end;
+	sc_faddr_t sdram_1_size, sdram_2_size;
+	sc_err_t sc_err;
+
+	sc_err = sc_rm_get_memreg_info(-1, 6, &addr_start, &addr_end);
+	if (sc_err == SC_ERR_NONE) {
+		if (addr_end < 0x100000000) {
+			/* only lower RAM available */
+			sdram_1_size = (addr_end + 1) - PHYS_SDRAM_1;
+			sdram_2_size = 0;
+		} else {
+			/* lower RAM (2 GB) und upper RAM available */
+			sdram_1_size = SZ_2G;
+			sdram_2_size = (addr_end + 1) - PHYS_SDRAM_2;
+		}
+	} else {
+		/* Get default in case it would fail */
+		sdram_1_size = PHYS_SDRAM_1_SIZE;
+		sdram_2_size = PHYS_SDRAM_2_SIZE;
+	}
+
+	*phys_sdram_1_start = PHYS_SDRAM_1;
+	*phys_sdram_1_size = sdram_1_size;
+	*phys_sdram_2_start = PHYS_SDRAM_2;
+	*phys_sdram_2_size = sdram_2_size;
+}
+#endif /* ! CONFIG_XPL_BUILD */
+
 #define ENET_PHY_RESET	IMX_GPIO_NR(0, 3)
 #define ENET_TEST_1	IMX_GPIO_NR(0, 8)
 #define ENET_TEST_2	IMX_GPIO_NR(0, 9)
diff --git a/include/configs/capricorn-common.h b/include/configs/capricorn-common.h
index 1f61b2b6af6..4d95f3fd79b 100644
--- a/include/configs/capricorn-common.h
+++ b/include/configs/capricorn-common.h
@@ -95,7 +95,9 @@
 #define CFG_SYS_SDRAM_BASE		0x80000000
 #define PHYS_SDRAM_1			0x80000000
 #define PHYS_SDRAM_2			0x880000000
-/* DDR3 board total DDR is 1 GB */
+/* Set default values to the smallest DDR we have in capricorn modules
+ * Use it in case the system controller would return an error
+ */
 #define PHYS_SDRAM_1_SIZE		0x40000000	/* 1 GB */
 #define PHYS_SDRAM_2_SIZE		0x00000000	/* 0 GB */
 
-- 
2.20.1