| #define ASSEMBLY 1 |
| |
| #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 "ram/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/cs5535/cs5535_early_smbus.c" |
| #include "southbridge/amd/cs5535/cs5535_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; |
| } |
| |
| |
| |
| |
| /* sdram parameters for OLPC: |
| row address = 13 |
| col address = 9 |
| banks = 4 |
| dimm0size=128MB |
| d0_MB=1 (module banks) |
| d0_cb=4 (component banks) |
| do_psz=4KB (page size) |
| Trc=10 (clocks) (ref2act) |
| Tras=7 (act2pre) |
| Trcd=3 (act2cmd) |
| Trp=3 (pre2act) |
| Trrd=2 (act2act) |
| Tref=17.8ms |
| */ |
| 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 = 1; |
| 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 = 4; |
| 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 */ |
| /* this is multiples of 8 MB */ |
| val = 128 / 8; |
| msr.hi &= ~(0xf << CF07_UPPER_D0_SZ_SHIFT); |
| msr.hi |= (val << CF07_UPPER_D0_SZ_SHIFT); |
| |
| /* page size = 2^col address */ |
| val = 2; /* 4096 bytes */ |
| 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"); |
| |
| |
| /* this is a standard value, DOES NOT PROBABLY MATCH FROM ABOVE */ |
| /* well, it may be close. It's about 200,000 ticks */ |
| msr.lo = 0x00003000; |
| wrmsr(MC_CF07_DATA, msr); |
| |
| /* timing and mode ... */ |
| |
| msr = rdmsr(0x20000019); |
| |
| /* per standard bios settings */ |
| |
| msr.hi = 0x18000108; |
| msr.lo = |
| (6<<28) | // cas_lat |
| (10<<24)| // ref2act |
| (7<<20)| // act2pre |
| (3<<16)| // pre2act |
| (3<<12)| // act2cmd |
| (2<<8)| // act2act |
| (2<<6)| // dplwr |
| (2<<4)| // dplrd |
| (3); // dal |
| |
| wrmsr(0x20000019, msr); |
| |
| } |
| |
| #include "northbridge/amd/gx2/raminit.c" |
| #include "sdram/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) |
| { |
| __builtin_wrmsr(0x1808, 0x10f3bf00, 0x22fffc02); |
| |
| __builtin_wrmsr(0x10000020, 0xfff80, 0x20000000); |
| __builtin_wrmsr(0x10000021, 0x80fffe0, 0x20000000); |
| |
| __builtin_wrmsr(0x40000020, 0xfff80, 0x20000000); |
| __builtin_wrmsr(0x40000021, 0x80fffe0, 0x20000000); |
| } |
| |
| |
| static void main(unsigned long bist) |
| { |
| static const struct mem_controller memctrl [] = { |
| {.channel0 = {(0xa<<3)|0, (0xa<<3)|1}} |
| }; |
| |
| SystemPreInit(); |
| msr_init(); |
| |
| w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE); |
| uart_init(); |
| console_init(); |
| |
| cs5536_early_setup(); |
| |
| pll_reset(); |
| |
| cpuRegInit(); |
| print_err("done cpuRegInit\n"); |
| |
| sdram_initialize(1, memctrl); |
| |
| /* Check all of memory */ |
| //ram_check(0x00000000, 640*1024); |
| } |