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snow: make romstage init DRAM controller and call ramstage 

This is a first cut at a romstage. It sets up memory, although that
needs some work; and finds and loads a ramstage.

Change-Id: I02a0eb48828500bf83c3c57d4bacb396e58bf9a5
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2245
Tested-by: build bot (Jenkins)
This commit is contained in:
Ronald G. Minnich 2013-01-30 15:55:36 -08:00
parent c9f26a169d
commit 0a5bc7fb47
1 changed files with 72 additions and 17 deletions
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89
src/mainboard/google/snow/romstage.c
View File

@ -19,35 +19,90 @@
#include <types.h>
#include <system.h>
#include <cache.h>
#include <cbfs.h>
#include <common.h>
#if 0
#include <arch/io.h>
/* FIXME: make i2c.h use standard types */
#define uchar unsigned char
#define uint unsigned int
#include <device/i2c.h>
#include <cpu/samsung/s5p-common/s3c24x0_i2c.h>
#include "cpu/samsung/exynos5250/dmc.h"
#include <cpu/samsung/exynos5250/power.h>
#include <cpu/samsung/exynos5250/setup.h>
#include <cpu/samsung/exynos5250/dmc.h>
#include <cpu/samsung/exynos5250/clock_init.h>
#include <cpu/samsung/exynos5-common/uart.h>
#endif
#include <console/console.h>
#include <arch/bootblock_exit.h>
#include <arch/stages.h>
void main(void);
void main(void)
{
// volatile unsigned long *pshold = (unsigned long *)0x1004330c;
struct cbfs_media cbfs;
// i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
// power_init();
// clock_init();
// exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
console_init();
printk(BIOS_INFO, "hello from romstage\n");
struct mem_timings *mem;
int ret;
// *pshold &= ~0x100; /* shut down */
mmu_setup(CONFIG_SYS_SDRAM_BASE, CONFIG_DRAM_SIZE_MB * 1024);
mem = clock_get_mem_timings();
printk(BIOS_SPEW, "clock_get_mem_timings returns 0x%p\n", mem);
printk(BIOS_SPEW, "man: 0x%x type: 0x%x, div: 0x%x, mhz: 0x%x\n",
mem->mem_manuf,
mem->mem_type,
mem->mpll_mdiv,
mem->frequency_mhz);
ret = ddr3_mem_ctrl_init(mem, DMC_INTERLEAVE_SIZE);
if (ret) {
printk(BIOS_ERR, "Memory controller init failed, err: %x\n",
ret);
while(1);
}
printk(BIOS_INFO, "ddr3_init done\n");
/* wow, did it work? */
int i;
u32 *c = (void *)CONFIG_RAMBASE;
// mmu_setup(CONFIG_SYS_SDRAM_BASE, CONFIG_DRAM_SIZE_MB * 1024);
// printk(BIOS_INFO, "mmu_setup done\n");
for(i = 0; i < 16384; i++)
c[i] = i+32768;
for(i = 0; i < 16384; i++)
if (c[i] != i+32768)
printk(BIOS_SPEW, "BADc[%02x]: %02x,", i, c[i]);
for(i = 0; i < 1048576; i++)
c[i] = 0;
ret = init_default_cbfs_media(&cbfs);
if (ret){
printk(BIOS_ERR, "init_default_cbfs_media returned %d: HALT\n",
ret);
while (1);
}
struct cbfs_stage *stage = (struct cbfs_stage *)
cbfs_get_file_content(&cbfs, "fallback/coreboot_ram",
CBFS_TYPE_STAGE);
printk(BIOS_ERR, "Stage: %p\n", stage);
printk(BIOS_ERR, "loading stage %s @ 0x%x (0x%x bytes),entry @ 0x%p\n",
"ram stage",
(uint32_t) stage->load, stage->memlen,
(void *)(u32)stage->entry);
#if 0
/* for reference and testing ... we should be able to remove soon */
// c = (void *)(u32)(stage->load + stage->len);
c = (void *)(u32)(stage->load);
printk(BIOS_ERR, "memzero 0x%x words starting at %p\n",
(stage->memlen /*- stage->len*/)/4, c);
for(i = 0; i < (stage->memlen /*- stage->len*/)/4; i++){
printk(BIOS_INFO, "%p, ", &c[i]);
c[i] = 0;
}
#endif
void *entry = cbfs_load_stage(&cbfs, "fallback/coreboot_ram");
printk(BIOS_INFO, "entry is %p\n", entry);
printk(BIOS_INFO, "sayonara, romstage!\n");
stage_exit((unsigned long)entry);
}