2 #include <device/pci_def.h>
4 #include <device/pnp_def.h>
5 #include <arch/romcc_io.h>
7 #include "pc80/serial.c"
8 #include <console/console.h>
9 #include "lib/ramtest.c"
10 #include "cpu/x86/bist.h"
11 #include "cpu/x86/msr.h"
12 #include <cpu/amd/gx2def.h>
14 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
16 #include "southbridge/amd/cs5536/cs5536_early_smbus.c"
17 #include "southbridge/amd/cs5536/cs5536_early_setup.c"
19 static inline int spd_read_byte(unsigned device, unsigned address)
21 return smbus_read_byte(device, address);
24 #include "northbridge/amd/gx2/raminit.h"
26 static inline unsigned int ctz(unsigned int n)
30 n = (n ^ (n - 1)) >> 1;
31 for (zeros = 0; n; zeros++)
38 static void sdram_set_spd_registers(const struct mem_controller *ctrl)
40 /* Total size of DIMM = 2^row address (byte 3) * 2^col address (byte 4) *
41 * component Banks (byte 17) * module banks, side (byte 5) *
42 * width in bits (byte 6,7)
43 * = Density per side (byte 31) * number of sides (byte 5) */
44 /* 1. Initialize GLMC registers base on SPD values, do one DIMM for now */
46 unsigned char module_banks, val;
49 msr = rdmsr(MC_CF07_DATA);
51 /* get module banks (sides) per dimm, SPD byte 5 */
52 module_banks = spd_read_byte(0xA0, 5);
53 if (module_banks < 1 || module_banks > 2)
54 print_err("Module banks per dimm\n");
56 msr.hi &= ~(1 << CF07_UPPER_D0_MB_SHIFT);
57 msr.hi |= (module_banks << CF07_UPPER_D0_MB_SHIFT);
59 /* get component banks per module bank, SPD byte 17 */
60 val = spd_read_byte(0xA0, 17);
61 if (val < 2 || val > 4)
62 print_err("Component banks per module bank\n");
64 msr.hi &= ~(0x1 << CF07_UPPER_D0_CB_SHIFT);
65 msr.hi |= (val << CF07_UPPER_D0_CB_SHIFT);
67 dimm_size = spd_read_byte(0xA0, 31);
68 dimm_size |= (dimm_size << 8); /* align so 1GB(bit0) is bit 8, this is a little weird to get gcc to not optimize this out */
69 dimm_size &= 0x01FC; /* and off 2GB DIMM size : not supported and the 1GB size we just moved up to bit 8 as well as all the extra on top */
70 /* Module Density * Module Banks */
71 dimm_size <<= (0 >> CF07_UPPER_D0_MB_SHIFT) & 1; /* shift to multiply by # DIMM banks */
73 dimm_size = ctz(dimm_size);
75 if (dimm_size > 7) { /* 7 is 512MB only support 512MB per DIMM */
76 print_err("Only support up to 512MB \n");
79 msr.hi |= dimm_size << CF07_UPPER_D0_SZ_SHIFT;
81 /* page size = 2^col address */
82 val = spd_read_byte(0xA0, 4);
84 msr.hi &= ~(0x7 << CF07_UPPER_D0_PSZ_SHIFT);
85 msr.hi |= (val << CF07_UPPER_D0_PSZ_SHIFT);
87 print_debug("computed msr.hi ");
88 print_debug_hex32(msr.hi);
92 wrmsr(MC_CF07_DATA, msr);
94 msr = rdmsr(MC_CF8F_DATA);
97 wrmsr(MC_CF8F_DATA, msr);
101 #include "northbridge/amd/gx2/raminit.c"
102 #include "lib/generic_sdram.c"
104 #include "northbridge/amd/gx2/pll_reset.c"
105 #include "cpu/amd/model_gx2/cpureginit.c"
106 #include "cpu/amd/model_gx2/syspreinit.c"
108 static void msr_init(void)
110 /* total physical memory */
111 __builtin_wrmsr(0x1808, 0x11f6bf00, 0x21c00002);
113 /* traditional memory 0kB-512kB, 512kB-1MB */
114 __builtin_wrmsr(0x10000020, 0xfff80, 0x20000000);
115 __builtin_wrmsr(0x10000021, 0x80fffe0, 0x20000000);
116 __builtin_wrmsr(0x10000026, 0x400fffc0, 0x2dfbc040);
117 __builtin_wrmsr(0x10000028, 0x6bf00100, 0x2000001f);
118 __builtin_wrmsr(0x1000002c, 0xffff0003, 0x2000ffff);
120 __builtin_wrmsr(0x10000080, 0x3, 0x0);
122 __builtin_wrmsr(0x40000020, 0xfff80, 0x20000000);
123 __builtin_wrmsr(0x40000021, 0x80fffe0, 0x20000000);
124 __builtin_wrmsr(0x40000023, 0x400fffc0, 0x20000040);
125 __builtin_wrmsr(0x40000029, 0x6bf00100, 0x2000001f);
126 __builtin_wrmsr(0x4000002d, 0xffff0003, 0x2000ffff);
128 __builtin_wrmsr(0x40000080, 0x1, 0x0);
130 __builtin_wrmsr(0x50002001, 0x27, 0x0);
131 __builtin_wrmsr(0x4c002001, 0x1, 0x0);
133 /* put code in northbridge[init].c here */
136 static void main(unsigned long bist)
138 static const struct mem_controller memctrl [] = {
139 {.channel0 = {(0xa<<3)|0, (0xa<<3)|1}}
145 cs5536_early_setup();
147 /* disable the power button */
148 outl(0x00, PMS_IO_BASE + 0x40);
150 cs5536_setup_onchipuart(1);
158 print_err("done cpuRegInit\n");
160 sdram_initialize(1, memctrl);
161 print_err("ram setup done\n");
163 /* Check all of memory */
164 /*ram_check(0x00000000, 640*1024);*/
165 print_err("ram check done\n");