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#define ASSEMBLY 1
#define __PRE_RAM__
#include <stdint.h>
#include <device/pci_def.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <arch/romcc_io.h>
#include <arch/hlt.h>
#include "pc80/serial.c"
#include "arch/i386/lib/console.c"
#include "lib/ramtest.c"
#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
#include "cpu/x86/bist.h"
#include "cpu/x86/msr.h"
#include <cpu/amd/gx2def.h>
#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
#include "southbridge/amd/cs5536/cs5536_early_smbus.c"
#include "southbridge/amd/cs5536/cs5536_early_setup.c"
static inline int spd_read_byte(unsigned device, unsigned address)
{
return smbus_read_byte(device, address);
}
#include "northbridge/amd/gx2/raminit.h"
static inline unsigned int fls(unsigned int x)
{
int r;
__asm__("bsfl %1,%0\n\t"
"jnz 1f\n\t"
"movl $32,%0\n"
"1:" : "=r" (r) : "g" (x));
return r;
}
static void sdram_set_spd_registers(const struct mem_controller *ctrl)
{
/* Total size of DIMM = 2^row address (byte 3) * 2^col address (byte 4) *
* component Banks (byte 17) * module banks, side (byte 5) *
* width in bits (byte 6,7)
* = Density per side (byte 31) * number of sides (byte 5) */
/* 1. Initialize GLMC registers base on SPD values, do one DIMM for now */
msr_t msr;
unsigned char module_banks, val;
msr = rdmsr(MC_CF07_DATA);
/* get module banks (sides) per dimm, SPD byte 5 */
module_banks = spd_read_byte(0xA0, 5);
if (module_banks < 1 || module_banks > 2)
print_err("Module banks per dimm\r\n");
module_banks >>= 1;
msr.hi &= ~(1 << CF07_UPPER_D0_MB_SHIFT);
msr.hi |= (module_banks << CF07_UPPER_D0_MB_SHIFT);
/* get component banks per module bank, SPD byte 17 */
val = spd_read_byte(0xA0, 17);
if (val < 2 || val > 4)
print_err("Component banks per module bank\r\n");
val >>= 2;
msr.hi &= ~(0x1 << CF07_UPPER_D0_CB_SHIFT);
msr.hi |= (val << CF07_UPPER_D0_CB_SHIFT);
/* get the module bank density, SPD byte 31 */
val = spd_read_byte(0xA0, 31);
val = fls(val);
val <<= module_banks;
msr.hi &= ~(0xf << CF07_UPPER_D0_SZ_SHIFT);
msr.hi |= (val << CF07_UPPER_D0_SZ_SHIFT);
/* page size = 2^col address */
val = spd_read_byte(0xA0, 4);
val -= 7;
msr.hi &= ~(0x7 << CF07_UPPER_D0_PSZ_SHIFT);
msr.hi |= (val << CF07_UPPER_D0_PSZ_SHIFT);
print_debug("computed msr.hi ");
print_debug_hex32(msr.hi);
print_debug("\r\n");
msr.lo = 0x00003000;
wrmsr(MC_CF07_DATA, msr);
msr = rdmsr(0x20000019);
msr.hi = 0x18000108;
msr.lo = 0x696332a3;
wrmsr(0x20000019, msr);
}
#include "northbridge/amd/gx2/raminit.c"
#include "lib/generic_sdram.c"
#define PLLMSRhi 0x00001490
#define PLLMSRlo 0x02000030
#define PLLMSRlo1 ((0xde << 16) | (1 << 26) | (1 << 24))
#define PLLMSRlo2 ((1<<14) |(1<<13) | (1<<0))
#include "northbridge/amd/gx2/pll_reset.c"
#include "cpu/amd/model_gx2/cpureginit.c"
#include "cpu/amd/model_gx2/syspreinit.c"
static void msr_init(void)
{
/* total physical memory */
__builtin_wrmsr(0x1808, 0x10f3bf00, 0x22fffc02);
/* traditional memory 0kB-512kB, 512kB-1MB */
__builtin_wrmsr(0x10000020, 0xfff80, 0x20000000);
__builtin_wrmsr(0x10000021, 0x80fffe0, 0x20000000);
__builtin_wrmsr(0x40000020, 0xfff80, 0x20000000);
__builtin_wrmsr(0x40000021, 0x80fffe0, 0x20000000);
/* put code in northbridge[init].c here */
}
static void main(unsigned long bist)
{
static const struct mem_controller memctrl [] = {
{.channel0 = {(0xa<<3)|0, (0xa<<3)|1}}
};
SystemPreInit();
w83627hf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
uart_init();
console_init();
cs5536_early_setup();
pll_reset();
cpuRegInit();
print_err("done cpuRegInit\n");
sdram_initialize(1, memctrl);
msr_init();
/* Check all of memory */
//ram_check(0x00000000, 640*1024);
}
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