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, 31 insertions, 0 deletions

diff --git a/src/soc/broadcom/cygnus/phy_reg_access.c b/src/soc/broadcom/cygnus/phy_reg_access.c
new file mode 100755
index 0000000000..eb48133656
--- /dev/null
+++ b/src/soc/broadcom/cygnus/phy_reg_access.c
@@ -0,0 +1,31 @@
+/*
+* Copyright (C) 2015 Broadcom Corporation
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation version 2.
+*
+* This program is distributed "as is" WITHOUT ANY WARRANTY of any
+* kind, whether express or implied; without even the implied warranty
+* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*/
+
+#include "soc/shmoo_and28/phy_reg_access.h"
+
+uint32 REGRD (uint32 address) {
+
+  volatile unsigned long data;
+
+  data = (* (volatile uint32 *) ( ((uint32)GLOBAL_REG_RBUS_START) | (address)));
+  //printf("REGRD %08X=%08X\n", address, data);
+  return data;
+}
+
+uint32 REGWR (uint32 address, uint32 data) {
+
+  ((* (volatile uint32 *) ( ((uint32)GLOBAL_REG_RBUS_START) | (address))) = data);
+  //printf("REGWR %08X=%08X\n", address, data);
+//  return SOC_E_NONE;
+   return 0;
+}