mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
96914e1655
parameter to two functions. 2. geodelx.h: define DRAM_TERMINATED and DRAM_UNTERMINATED constants 3. dbe62/initram.c: move to auto PLL control, so set MANUALCONF to 0 4. all other initram.c: set up calls to cpu_reg_init with proper TERMINATED/UNTERMINATED constants. builds for dbe62. The auto PLL strapping is tested and works. Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> git-svn-id: svn://coreboot.org/repository/coreboot-v3@699 f3766cd6-281f-0410-b1cd-43a5c92072e9
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright (C) 2007 Advanced Micro Devices, 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#define _MAINOBJECT
|
|
|
|
#include <types.h>
|
|
#include <lib.h>
|
|
#include <console.h>
|
|
#include <device/device.h>
|
|
#include <device/pci.h>
|
|
#include <string.h>
|
|
#include <msr.h>
|
|
#include <io.h>
|
|
#include <amd_geodelx.h>
|
|
#include <northbridge/amd/geodelx/raminit.h>
|
|
|
|
/* #include <device/smbus.h>
|
|
* TODO: figure out how smbus functions should be done. See smbus_ops.c
|
|
*/
|
|
extern int smbus_read_byte(u16 device, u8 address);
|
|
|
|
#define MANUALCONF 0 /* Do automatic strapped PLL config */
|
|
#define PLLMSRHI 0x00001490 /* manual settings for the PLL */
|
|
#define PLLMSRLO 0x02000030
|
|
#define DIMM0 ((u8) 0xA0)
|
|
#define DIMM1 ((u8) 0xA2)
|
|
|
|
u8 spd_read_byte(u16 device, u8 address)
|
|
{
|
|
u8 spdbyte;
|
|
|
|
printk(BIOS_DEBUG, "spd_read_byte dev %04x\n", device);
|
|
|
|
spdbyte = smbus_read_byte(device, address);
|
|
|
|
printk(BIOS_DEBUG, " addr %02x returns %02x\n", address, spdbyte);
|
|
|
|
return spdbyte;
|
|
}
|
|
|
|
/**
|
|
* Placeholder in case we ever need it. Since this file is a
|
|
* template for other motherboards, we want this here and we want the
|
|
* call in the right place.
|
|
*/
|
|
|
|
static void mb_gpio_init(void)
|
|
{
|
|
/* Early mainboard specific GPIO setup */
|
|
}
|
|
|
|
/**
|
|
* main for initram for the AMD DB800 development platform.
|
|
* It might seem that you could somehow do these functions in, e.g., the cpu
|
|
* code, but the order of operations and what those operations are is VERY
|
|
* strongly mainboard dependent. It's best to leave it in the mainboard code.
|
|
*/
|
|
int main(void)
|
|
{
|
|
printk(BIOS_DEBUG, "Hi there from initram (stage1) main!\n");
|
|
post_code(POST_START_OF_MAIN);
|
|
|
|
system_preinit();
|
|
printk(BIOS_DEBUG, "done preinit\n");
|
|
|
|
mb_gpio_init();
|
|
printk(BIOS_DEBUG, "done gpio init\n");
|
|
|
|
pll_reset(MANUALCONF, PLLMSRHI, PLLMSRLO);
|
|
printk(BIOS_DEBUG, "done pll reset\n");
|
|
|
|
cpu_reg_init(0, DIMM0, DIMM1, DRAM_UNTERMINATED);
|
|
printk(BIOS_DEBUG, "done cpu reg init\n");
|
|
|
|
sdram_set_registers();
|
|
printk(BIOS_DEBUG, "done sdram set registers\n");
|
|
|
|
sdram_set_spd_registers(DIMM0, DIMM1);
|
|
printk(BIOS_DEBUG, "done sdram set spd registers\n");
|
|
|
|
sdram_enable(DIMM0, DIMM1);
|
|
printk(BIOS_DEBUG, "done sdram enable\n");
|
|
|
|
/* Check low memory */
|
|
/*ram_check(0x00000000, 640*1024); */
|
|
|
|
printk(BIOS_DEBUG, "stage1 returns\n");
|
|
return 0;
|
|
}
|