diff options
Diffstat (limited to 'cpu/mpc85xx/cpu.c')
| -rw-r--r-- | cpu/mpc85xx/cpu.c | 152 |
1 files changed, 113 insertions, 39 deletions
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c index 9873383..2b7e753 100644 --- a/cpu/mpc85xx/cpu.c +++ b/cpu/mpc85xx/cpu.c @@ -29,41 +29,45 @@ #include <watchdog.h> #include <command.h> #include <asm/cache.h> +#include <asm/io.h> DECLARE_GLOBAL_DATA_PTR; -struct cpu_type { - char name[15]; - u32 soc_ver; +struct cpu_type cpu_type_list [] = { + CPU_TYPE_ENTRY(8533, 8533), + CPU_TYPE_ENTRY(8533, 8533_E), + CPU_TYPE_ENTRY(8540, 8540), + CPU_TYPE_ENTRY(8541, 8541), + CPU_TYPE_ENTRY(8541, 8541_E), + CPU_TYPE_ENTRY(8543, 8543), + CPU_TYPE_ENTRY(8543, 8543_E), + CPU_TYPE_ENTRY(8544, 8544), + CPU_TYPE_ENTRY(8544, 8544_E), + CPU_TYPE_ENTRY(8545, 8545), + CPU_TYPE_ENTRY(8545, 8545_E), + CPU_TYPE_ENTRY(8547, 8547_E), + CPU_TYPE_ENTRY(8548, 8548), + CPU_TYPE_ENTRY(8548, 8548_E), + CPU_TYPE_ENTRY(8555, 8555), + CPU_TYPE_ENTRY(8555, 8555_E), + CPU_TYPE_ENTRY(8560, 8560), + CPU_TYPE_ENTRY(8567, 8567), + CPU_TYPE_ENTRY(8567, 8567_E), + CPU_TYPE_ENTRY(8568, 8568), + CPU_TYPE_ENTRY(8568, 8568_E), + CPU_TYPE_ENTRY(8572, 8572), + CPU_TYPE_ENTRY(8572, 8572_E), }; -#define CPU_TYPE_ENTRY(x) {#x, SVR_##x} +struct cpu_type *identify_cpu(uint ver) +{ + int i; + for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++) + if (cpu_type_list[i].soc_ver == ver) + return &cpu_type_list[i]; -struct cpu_type cpu_type_list [] = { - CPU_TYPE_ENTRY(8533), - CPU_TYPE_ENTRY(8533_E), - CPU_TYPE_ENTRY(8540), - CPU_TYPE_ENTRY(8541), - CPU_TYPE_ENTRY(8541_E), - CPU_TYPE_ENTRY(8543), - CPU_TYPE_ENTRY(8543_E), - CPU_TYPE_ENTRY(8544), - CPU_TYPE_ENTRY(8544_E), - CPU_TYPE_ENTRY(8545), - CPU_TYPE_ENTRY(8545_E), - CPU_TYPE_ENTRY(8547_E), - CPU_TYPE_ENTRY(8548), - CPU_TYPE_ENTRY(8548_E), - CPU_TYPE_ENTRY(8555), - CPU_TYPE_ENTRY(8555_E), - CPU_TYPE_ENTRY(8560), - CPU_TYPE_ENTRY(8567), - CPU_TYPE_ENTRY(8567_E), - CPU_TYPE_ENTRY(8568), - CPU_TYPE_ENTRY(8568_E), - CPU_TYPE_ENTRY(8572), - CPU_TYPE_ENTRY(8572_E), -}; + return NULL; +} int checkcpu (void) { @@ -74,9 +78,13 @@ int checkcpu (void) uint fam; uint ver; uint major, minor; - int i; - u32 ddr_ratio; + struct cpu_type *cpu; +#ifdef CONFIG_DDR_CLK_FREQ volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR); + u32 ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9; +#else + u32 ddr_ratio = 0; +#endif svr = get_svr(); ver = SVR_SOC_VER(svr); @@ -85,14 +93,15 @@ int checkcpu (void) puts("CPU: "); - for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++) - if (cpu_type_list[i].soc_ver == ver) { - puts(cpu_type_list[i].name); - break; - } + cpu = identify_cpu(ver); + if (cpu) { + puts(cpu->name); - if (i == ARRAY_SIZE(cpu_type_list)) + if (svr & 0x80000) + puts("E"); + } else { puts("Unknown"); + } printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr); @@ -118,7 +127,7 @@ int checkcpu (void) puts("Clock Configuration:\n"); printf(" CPU:%4lu MHz, ", DIV_ROUND_UP(sysinfo.freqProcessor,1000000)); printf("CCB:%4lu MHz,\n", DIV_ROUND_UP(sysinfo.freqSystemBus,1000000)); - ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9; + switch (ddr_ratio) { case 0x0: printf(" DDR:%4lu MHz (%lu MT/s data rate), ", @@ -159,7 +168,7 @@ int checkcpu (void) } #ifdef CONFIG_CPM2 - printf("CPM: %lu Mhz\n", sysinfo.freqSystemBus / 1000000); + printf("CPM: %lu Mhz\n", sysinfo.freqSystemBus / 1000000); #endif puts("L1: D-cache 32 kB enabled\n I-cache 32 kB enabled\n"); @@ -279,3 +288,68 @@ int dma_xfer(void *dest, uint count, void *src) { return dma_check(); } #endif +/* + * Configures a UPM. Currently, the loop fields in MxMR (RLF, WLF and TLF) + * are hardcoded as "1"."size" is the number or entries, not a sizeof. + */ +void upmconfig (uint upm, uint * table, uint size) +{ + int i, mdr, mad, old_mad = 0; + volatile u32 *mxmr; + volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR); + int loopval = 0x00004440; + volatile u32 *brp,*orp; + volatile u8* dummy = NULL; + int upmmask; + + switch (upm) { + case UPMA: + mxmr = &lbc->mamr; + upmmask = BR_MS_UPMA; + break; + case UPMB: + mxmr = &lbc->mbmr; + upmmask = BR_MS_UPMB; + break; + case UPMC: + mxmr = &lbc->mcmr; + upmmask = BR_MS_UPMC; + break; + default: + printf("%s: Bad UPM index %d to configure\n", __FUNCTION__, upm); + hang(); + } + + /* Find the address for the dummy write transaction */ + for (brp = &lbc->br0, orp = &lbc->or0, i = 0; i < 8; + i++, brp += 2, orp += 2) { + + /* Look for a valid BR with selected UPM */ + if ((in_be32(brp) & (BR_V | upmmask)) == (BR_V | upmmask)) { + dummy = (volatile u8*)(in_be32(brp) >> BR_BA_SHIFT); + break; + } + } + + if (i == 8) { + printf("Error: %s() could not find matching BR\n", __FUNCTION__); + hang(); + } + + for (i = 0; i < size; i++) { + /* 1 */ + out_be32(mxmr, loopval | 0x10000000 | i); /* OP_WRITE */ + /* 2 */ + out_be32(&lbc->mdr, table[i]); + /* 3 */ + mdr = in_be32(&lbc->mdr); + /* 4 */ + *(volatile u8 *)dummy = 0; + /* 5 */ + do { + mad = in_be32(mxmr) & 0x3f; + } while (mad <= old_mad && !(!mad && i == (size-1))); + old_mad = mad; + } + out_be32(mxmr, loopval); /* OP_NORMAL */ +} |