| /* |
| * Copyright 2004,2007,2008 Freescale Semiconductor, Inc. |
| * (C) Copyright 2002, 2003 Motorola Inc. |
| * Xianghua Xiao (X.Xiao@motorola.com) |
| * |
| * (C) Copyright 2000 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <common.h> |
| #include <watchdog.h> |
| #include <command.h> |
| #include <asm/cache.h> |
| #include <asm/io.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| 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), |
| }; |
| |
| struct cpu_type *identify_cpu(u32 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]; |
| |
| return NULL; |
| } |
| |
| int checkcpu (void) |
| { |
| sys_info_t sysinfo; |
| uint lcrr; /* local bus clock ratio register */ |
| uint clkdiv; /* clock divider portion of lcrr */ |
| uint pvr, svr; |
| uint fam; |
| uint ver; |
| uint major, minor; |
| 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); |
| major = SVR_MAJ(svr); |
| minor = SVR_MIN(svr); |
| |
| puts("CPU: "); |
| |
| cpu = identify_cpu(ver); |
| if (cpu) { |
| puts(cpu->name); |
| |
| if (IS_E_PROCESSOR(svr)) |
| puts("E"); |
| } else { |
| puts("Unknown"); |
| } |
| |
| printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr); |
| |
| pvr = get_pvr(); |
| fam = PVR_FAM(pvr); |
| ver = PVR_VER(pvr); |
| major = PVR_MAJ(pvr); |
| minor = PVR_MIN(pvr); |
| |
| printf("Core: "); |
| switch (fam) { |
| case PVR_FAM(PVR_85xx): |
| puts("E500"); |
| break; |
| default: |
| puts("Unknown"); |
| break; |
| } |
| printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr); |
| |
| get_sys_info(&sysinfo); |
| |
| 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)); |
| |
| switch (ddr_ratio) { |
| case 0x0: |
| printf(" DDR:%4lu MHz (%lu MT/s data rate), ", |
| DIV_ROUND_UP(sysinfo.freqDDRBus,2000000), DIV_ROUND_UP(sysinfo.freqDDRBus,1000000)); |
| break; |
| case 0x7: |
| printf(" DDR:%4lu MHz (%lu MT/s data rate) (Synchronous), ", |
| DIV_ROUND_UP(sysinfo.freqDDRBus, 2000000), DIV_ROUND_UP(sysinfo.freqDDRBus, 1000000)); |
| break; |
| default: |
| printf(" DDR:%4lu MHz (%lu MT/s data rate) (Asynchronous), ", |
| DIV_ROUND_UP(sysinfo.freqDDRBus, 2000000), DIV_ROUND_UP(sysinfo.freqDDRBus,1000000)); |
| break; |
| } |
| |
| #if defined(CFG_LBC_LCRR) |
| lcrr = CFG_LBC_LCRR; |
| #else |
| { |
| volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR); |
| |
| lcrr = lbc->lcrr; |
| } |
| #endif |
| clkdiv = lcrr & 0x0f; |
| if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) { |
| #if defined(CONFIG_MPC8548) || defined(CONFIG_MPC8544) |
| /* |
| * Yes, the entire PQ38 family use the same |
| * bit-representation for twice the clock divider values. |
| */ |
| clkdiv *= 2; |
| #endif |
| printf("LBC:%4lu MHz\n", |
| DIV_ROUND_UP(sysinfo.freqSystemBus, 1000000) / clkdiv); |
| } else { |
| printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr); |
| } |
| |
| #ifdef CONFIG_CPM2 |
| printf("CPM: %lu Mhz\n", sysinfo.freqSystemBus / 1000000); |
| #endif |
| |
| puts("L1: D-cache 32 kB enabled\n I-cache 32 kB enabled\n"); |
| |
| return 0; |
| } |
| |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) |
| { |
| uint pvr; |
| uint ver; |
| unsigned long val, msr; |
| |
| pvr = get_pvr(); |
| ver = PVR_VER(pvr); |
| |
| if (ver & 1){ |
| /* e500 v2 core has reset control register */ |
| volatile unsigned int * rstcr; |
| rstcr = (volatile unsigned int *)(CFG_IMMR + 0xE00B0); |
| *rstcr = 0x2; /* HRESET_REQ */ |
| udelay(100); |
| } |
| |
| /* |
| * Fallthrough if the code above failed |
| * Initiate hard reset in debug control register DBCR0 |
| * Make sure MSR[DE] = 1 |
| */ |
| |
| msr = mfmsr (); |
| msr |= MSR_DE; |
| mtmsr (msr); |
| |
| val = mfspr(DBCR0); |
| val |= 0x70000000; |
| mtspr(DBCR0,val); |
| |
| return 1; |
| } |
| |
| |
| /* |
| * Get timebase clock frequency |
| */ |
| unsigned long get_tbclk (void) |
| { |
| return (gd->bus_clk + 4UL)/8UL; |
| } |
| |
| |
| #if defined(CONFIG_WATCHDOG) |
| void |
| watchdog_reset(void) |
| { |
| int re_enable = disable_interrupts(); |
| reset_85xx_watchdog(); |
| if (re_enable) enable_interrupts(); |
| } |
| |
| void |
| reset_85xx_watchdog(void) |
| { |
| /* |
| * Clear TSR(WIS) bit by writing 1 |
| */ |
| unsigned long val; |
| val = mfspr(SPRN_TSR); |
| val |= TSR_WIS; |
| mtspr(SPRN_TSR, val); |
| } |
| #endif /* CONFIG_WATCHDOG */ |
| |
| #if defined(CONFIG_DDR_ECC) |
| void dma_init(void) { |
| volatile ccsr_dma_t *dma = (void *)(CFG_MPC85xx_DMA_ADDR); |
| |
| dma->satr0 = 0x02c40000; |
| dma->datr0 = 0x02c40000; |
| dma->sr0 = 0xfffffff; /* clear any errors */ |
| asm("sync; isync; msync"); |
| return; |
| } |
| |
| uint dma_check(void) { |
| volatile ccsr_dma_t *dma = (void *)(CFG_MPC85xx_DMA_ADDR); |
| volatile uint status = dma->sr0; |
| |
| /* While the channel is busy, spin */ |
| while((status & 4) == 4) { |
| status = dma->sr0; |
| } |
| |
| /* clear MR0[CS] channel start bit */ |
| dma->mr0 &= 0x00000001; |
| asm("sync;isync;msync"); |
| |
| if (status != 0) { |
| printf ("DMA Error: status = %x\n", status); |
| } |
| return status; |
| } |
| |
| int dma_xfer(void *dest, uint count, void *src) { |
| volatile ccsr_dma_t *dma = (void *)(CFG_MPC85xx_DMA_ADDR); |
| |
| dma->dar0 = (uint) dest; |
| dma->sar0 = (uint) src; |
| dma->bcr0 = count; |
| dma->mr0 = 0xf000004; |
| asm("sync;isync;msync"); |
| dma->mr0 = 0xf000005; |
| asm("sync;isync;msync"); |
| 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 */ |
| } |
| |
| #if defined(CONFIG_TSEC_ENET) || defined(CONFIGMPC85XX_FEC) |
| /* Default initializations for TSEC controllers. To override, |
| * create a board-specific function called: |
| * int board_eth_init(bd_t *bis) |
| */ |
| |
| extern int tsec_initialize(bd_t * bis, int index, char *devname); |
| |
| int cpu_eth_init(bd_t *bis) |
| { |
| #if defined(CONFIG_TSEC1) |
| tsec_initialize(bis, 0, CONFIG_TSEC1_NAME); |
| #endif |
| #if defined(CONFIG_TSEC2) |
| tsec_initialize(bis, 1, CONFIG_TSEC2_NAME); |
| #endif |
| #if defined(CONFIG_MPC85XX_FEC) |
| tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME); |
| #else |
| #if defined(CONFIG_TSEC3) |
| tsec_initialize(bis, 2, CONFIG_TSEC3_NAME); |
| #endif |
| #if defined(CONFIG_TSEC4) |
| tsec_initialize(bis, 3, CONFIG_TSEC4_NAME); |
| #endif |
| #endif |
| return 0; |
| } |
| #endif |