From 650d11ce94dea9ecc3fee3c2eb4dcb423af3f503 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Thu, 26 Jun 2014 14:24:42 -0700 Subject: coreboot rush: Add dram init code Add support for initializing dram within romstage. This is an essential before we move to the armv8 core. BUG=None BRANCH=None TEST=Compiles succesfully for rush. Tried writing to and reading value from the base of sdram and it worked fine. Also tested with primitive_memtest CL: https://chromium-review.googlesource.com/#/c/186309/5 Original-Change-Id: I67ec04c766e249c9727b0cf2ba216522c862c2f5 Original-Signed-off-by: Furquan Shaikh Original-Reviewed-on: https://chromium-review.googlesource.com/205823 Original-Tested-by: Furquan Shaikh Original-Reviewed-by: Aaron Durbin Original-Commit-Queue: Aaron Durbin (cherry picked from commit 33c468b16e7ccd8cf9266d6a9ca30c02da104821) Signed-off-by: Marc Jones Change-Id: I4baface2c109ca74f85f43a25508677c46c64159 Reviewed-on: http://review.coreboot.org/8574 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/mainboard/google/rush/Makefile.inc | 1 + src/mainboard/google/rush/romstage.c | 7 ++++ src/mainboard/google/rush/sdram_configs.c | 57 +++++++++++++++++++++++++++++++ src/mainboard/google/rush/sdram_configs.h | 28 +++++++++++++++ 4 files changed, 93 insertions(+) create mode 100644 src/mainboard/google/rush/sdram_configs.c create mode 100644 src/mainboard/google/rush/sdram_configs.h (limited to 'src/mainboard/google/rush') diff --git a/src/mainboard/google/rush/Makefile.inc b/src/mainboard/google/rush/Makefile.inc index 4c6273f99f..746af11392 100644 --- a/src/mainboard/google/rush/Makefile.inc +++ b/src/mainboard/google/rush/Makefile.inc @@ -34,5 +34,6 @@ bootblock-y += reset.c romstage-y += romstage.c romstage-y += reset.c +romstage-y += sdram_configs.c ramstage-y += mainboard.c \ No newline at end of file diff --git a/src/mainboard/google/rush/romstage.c b/src/mainboard/google/rush/romstage.c index f0de9c0dfb..9db52989f7 100644 --- a/src/mainboard/google/rush/romstage.c +++ b/src/mainboard/google/rush/romstage.c @@ -22,6 +22,9 @@ #include #include +#include "sdram_configs.h" +#include + void main(void) { void *entry; @@ -31,6 +34,10 @@ void main(void) printk(BIOS_INFO, "T132: romstage here\n"); + sdram_init(get_sdram_config()); + + printk(BIOS_INFO, "T132 romstage: sdram_init done\n"); + while (1); entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/ramstage"); diff --git a/src/mainboard/google/rush/sdram_configs.c b/src/mainboard/google/rush/sdram_configs.c new file mode 100644 index 0000000000..18386ac53e --- /dev/null +++ b/src/mainboard/google/rush/sdram_configs.c @@ -0,0 +1,57 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. + * + * 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 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include "sdram_configs.h" + +static struct sdram_params sdram_configs[] = { +#include "bct/sdram-hynix-2GB-924.inc" /* ram_code = 0000 */ +#include "bct/sdram-hynix-4GB-792.inc" /* ram_code = 0001 */ +#include "bct/sdram-unused.inc" /* ram_code = 0010 */ +#include "bct/sdram-unused.inc" /* ram_code = 0011 */ +#include "bct/sdram-unused.inc" /* ram_code = 0100 */ +#include "bct/sdram-unused.inc" /* ram_code = 0101 */ +#include "bct/sdram-unused.inc" /* ram_code = 0110 */ +#include "bct/sdram-unused.inc" /* ram_code = 0111 */ +#include "bct/sdram-unused.inc" /* ram_code = 1000 */ +#include "bct/sdram-unused.inc" /* ram_code = 1001 */ +#include "bct/sdram-unused.inc" /* ram_code = 1010 */ +#include "bct/sdram-unused.inc" /* ram_code = 1011 */ +#include "bct/sdram-unused.inc" /* ram_code = 1100 */ +#include "bct/sdram-unused.inc" /* ram_code = 1101 */ +#include "bct/sdram-unused.inc" /* ram_code = 1110 */ +#include "bct/sdram-unused.inc" /* ram_code = 1111 */ +}; + +const struct sdram_params *get_sdram_config() +{ + uint32_t ramcode = sdram_get_ram_code(); + /* + * If we need to apply some special hacks to RAMCODE mapping (ex, by + * board_id), do that now. + */ + + printk(BIOS_SPEW, "%s: RAMCODE=%d\n", __func__, ramcode); + if (ramcode >= sizeof(sdram_configs) / sizeof(sdram_configs[0]) || + sdram_configs[ramcode].MemoryType == NvBootMemoryType_Unused) + die("Invalid RAMCODE."); + + return &sdram_configs[ramcode]; +} diff --git a/src/mainboard/google/rush/sdram_configs.h b/src/mainboard/google/rush/sdram_configs.h new file mode 100644 index 0000000000..e00e9ca04c --- /dev/null +++ b/src/mainboard/google/rush/sdram_configs.h @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. + * + * 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 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __MAINBOARD_GOOGLE_RUSH_SDRAM_CONFIG_H__ +#define __MAINBOARD_GOOGLE_RUSH_SDRAM_CONFIG_H__ + +#include + +/* Loads SDRAM configurations for current system. */ +const struct sdram_params *get_sdram_config(void); + +#endif /* __MAINBOARD_GOOGLE_RUSH_SDRAM_CONFIG_H__ */ -- cgit v1.2.3