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/*
* Copyright 2006,2009-2010 Freescale Semiconductor, Inc.
* Jeff Brown
* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
*
* 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/mmu.h>
#include <mpc86xx.h>
#include <asm/fsl_law.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Default board reset function
*/
static void
__board_reset(void)
{
/* Do nothing */
}
void board_reset(void) __attribute__((weak, alias("__board_reset")));
int
checkcpu(void)
{
sys_info_t sysinfo;
uint pvr, svr;
uint major, minor;
char buf1[32], buf2[32];
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
struct cpu_type *cpu;
uint msscr0 = mfspr(MSSCR0);
svr = get_svr();
major = SVR_MAJ(svr);
minor = SVR_MIN(svr);
if (cpu_numcores() > 1) {
#ifndef CONFIG_MP
puts("Unicore software on multiprocessor system!!\n"
"To enable mutlticore build define CONFIG_MP\n");
#endif
}
puts("CPU: ");
cpu = gd->arch.cpu;
puts(cpu->name);
printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
puts("Core: ");
pvr = get_pvr();
major = PVR_E600_MAJ(pvr);
minor = PVR_E600_MIN(pvr);
printf("e600 Core %d", (msscr0 & 0x20) ? 1 : 0);
if (gur->pordevsr & MPC86xx_PORDEVSR_CORE1TE)
puts("\n Core1Translation Enabled");
debug(" (MSSCR0=%x, PORDEVSR=%x)", msscr0, gur->pordevsr);
printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
get_sys_info(&sysinfo);
puts("Clock Configuration:\n");
printf(" CPU:%-4s MHz, ", strmhz(buf1, sysinfo.freqProcessor));
printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
printf(" DDR:%-4s MHz (%s MT/s data rate), ",
strmhz(buf1, sysinfo.freqSystemBus / 2),
strmhz(buf2, sysinfo.freqSystemBus));
if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
} else {
printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
sysinfo.freqLocalBus);
}
puts("L1: D-cache 32 KB enabled\n");
puts(" I-cache 32 KB enabled\n");
puts("L2: ");
if (get_l2cr() & 0x80000000) {
#if defined(CONFIG_MPC8610)
puts("256");
#elif defined(CONFIG_MPC8641)
puts("512");
#endif
puts(" KB enabled\n");
} else {
puts("Disabled\n");
}
return 0;
}
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
/* Attempt board-specific reset */
board_reset();
/* Next try asserting HRESET_REQ */
out_be32(&gur->rstcr, MPC86xx_RSTCR_HRST_REQ);
while (1)
;
return 1;
}
/*
* Get timebase clock frequency
*/
unsigned long
get_tbclk(void)
{
sys_info_t sys_info;
get_sys_info(&sys_info);
return (sys_info.freqSystemBus + 3L) / 4L;
}
#if defined(CONFIG_WATCHDOG)
void
watchdog_reset(void)
{
#if defined(CONFIG_MPC8610)
/*
* This actually feed the hard enabled watchdog.
*/
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
volatile ccsr_wdt_t *wdt = &immap->im_wdt;
volatile ccsr_gur_t *gur = &immap->im_gur;
u32 tmp = gur->pordevsr;
if (tmp & 0x4000) {
wdt->swsrr = 0x556c;
wdt->swsrr = 0xaa39;
}
#endif
}
#endif /* CONFIG_WATCHDOG */
/*
* Print out the state of various machine registers.
* Currently prints out LAWs, BR0/OR0, and BATs
*/
void mpc86xx_reginfo(void)
{
print_bats();
print_laws();
print_lbc_regs();
}
/*
* Set the DDR BATs to reflect the actual size of DDR.
*
* dram_size is the actual size of DDR, in bytes
*
* Note: we assume that CONFIG_MAX_MEM_MAPPED is 2G or smaller as we only
* are using a single BAT to cover DDR.
*
* If this is not true, (e.g. CONFIG_MAX_MEM_MAPPED is 2GB but HID0_XBSEN
* is not defined) then we might have a situation where U-Boot will attempt
* to relocated itself outside of the region mapped by DBAT0.
* This will cause a machine check.
*
* Currently we are limited to power of two sized DDR since we only use a
* single bat. If a non-power of two size is used that is less than
* CONFIG_MAX_MEM_MAPPED u-boot will crash.
*
*/
void setup_ddr_bat(phys_addr_t dram_size)
{
unsigned long batu, bl;
bl = TO_BATU_BL(min(dram_size, CONFIG_MAX_MEM_MAPPED));
if (BATU_SIZE(bl) != dram_size) {
u64 sz = (u64)dram_size - BATU_SIZE(bl);
print_size(sz, " left unmapped\n");
}
batu = bl | BATU_VS | BATU_VP;
write_bat(DBAT0, batu, CONFIG_SYS_DBAT0L);
write_bat(IBAT0, batu, CONFIG_SYS_IBAT0L);
}
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