upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/cpu/mpc85xx/cpu.c

277 lines
6.2 KiB

/*
* 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>
DECLARE_GLOBAL_DATA_PTR;
struct cpu_type {
char name[15];
u32 soc_ver;
};
#define CPU_TYPE_ENTRY(x) {#x, SVR_##x}
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),
};
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;
int i;
u32 ddr_ratio;
volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
svr = get_svr();
ver = SVR_SOC_VER(svr);
major = SVR_MAJ(svr);
minor = SVR_MIN(svr);
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;
}
if (i == ARRAY_SIZE(cpu_type_list))
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, ", sysinfo.freqProcessor / 1000000);
printf("CCB:%4lu MHz,\n", sysinfo.freqSystemBus / 1000000);
ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9;
switch (ddr_ratio) {
case 0x0:
printf(" DDR:%4lu MHz (%lu MT/s data rate), ",
sysinfo.freqDDRBus / 2000000, sysinfo.freqDDRBus / 1000000);
break;
case 0x7:
printf(" DDR:%4lu MHz (%lu MT/s data rate) (Synchronous), ",
sysinfo.freqDDRBus / 2000000, sysinfo.freqDDRBus / 1000000);
break;
default:
printf(" DDR:%4lu MHz (%lu MT/s data rate) (Asynchronous), ",
sysinfo.freqDDRBus / 2000000, 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",
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;
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 */
}else{
/*
* Initiate hard reset in debug control register DBCR0
* Make sure MSR[DE] = 1
*/
unsigned long val, msr;
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