broadcom/cygnus: Initialize dram in romstage.

BUG=chrome-os-partner:36456
BRANCH=broadcom-firmware
TEST=When enable configuration CYGNUS_SDRAM_TEST_DDR,
print on console:

sdram initialization is completed.
test ddr start from 0x60000000 to 0x80000000
...
test ddr end: fail=0
Translation table is @ 02004000
Mapping address range [0x00000000:0x00000000) as uncached

Change-Id: I88dc2f0c504e2a152133edd442c3d776dd73d37e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 376471751d6980f99bbe47faad193c79a05fa69f
Original-Signed-off-by: Icarus Chau <ichau@broadcom.com>
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/199775
Original-Commit-Queue: <ichau@broadcom.com>
Original-Tested-by: <ichau@broadcom.com>
Original-Reviewed-by: Scott Branden <sbranden@broadcom.com>
Original-Change-Id: I47bc5d9ec147cc8bfbd893e8c0d7e5fc5e401771
Original-Reviewed-on: https://chromium-review.googlesource.com/256416
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: http://review.coreboot.org/9853
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 38 insertions, 1 deletions

diff --git a/src/soc/broadcom/cygnus/sdram.c b/src/soc/broadcom/cygnus/sdram.c
index d9b45c0d43..1642842e0c 100644
--- a/src/soc/broadcom/cygnus/sdram.c
+++ b/src/soc/broadcom/cygnus/sdram.c
@@ -17,9 +17,46 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include <console/console.h>
+#include <symbols.h>
 #include <soc/sdram.h>
 
+#define DRAM_TEST_LEN 0x8000000
+
+static void test_ddr(void)
+{
+	if (IS_ENABLED(CONFIG_CYGNUS_SDRAM_TEST_DDR)) {
+		uint32_t *test_buffer = (uint32_t *) _dram;
+		uint32_t len = DRAM_TEST_LEN;
+		uint32_t i;
+		uint32_t fail_count = 0;
+
+		printk(BIOS_INFO, "test ddr start from 0x%p to 0x%p\n", test_buffer,
+			test_buffer + len);
+
+		for (i = 0; i < len; i++)
+			*(test_buffer + i) = i;
+
+		for (i = 0; i < len; i++) {
+			int val = *(test_buffer + i);
+
+			if ((i % 0x10000) == 0)
+				printk(BIOS_INFO, "#");
+
+			if (i != val) {
+				printk(BIOS_ERR, "\ntest_ddr: @ 0x%p: %d != %d\n",
+					test_buffer + i, i, val);
+				fail_count++;
+			}
+		}
+		printk(BIOS_INFO, "\ntest ddr end: fail=%d\n", fail_count);
+	}
+}
+
 void sdram_init(void)
 {
-	printk(BIOS_INFO, "sdram initialization is not implemented\n");
+	printk(BIOS_INFO, "sdram initialization is in progress...\n");
+	ddr_init2();
+	printk(BIOS_INFO, "sdram initialization is completed.\n");
+
+	test_ddr();
 }