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u-boot/cpu/ppc4xx/cpu.c
Stefan Roese 3d9569b232 Changed PPC44x startup message (cpu info, speed...) to common style: 
On PPC44x platforms, the startup message generated in "cpu.c" only
comprised the ppc type and revision but not additional informations
like speed etc. Those speed infos where printed in the board specific
code. This new implementation now prints all CPU infos in the common
cpu specific code. No board specific code is needed anymore and
therefore removed from all current 44x implementations.

Patch by Stefan Roese, 27 Nov 2005
2005-11-27 19:36:26 +01:00

331 lines
7.1 KiB
C
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/*
* (C) Copyright 2000-2003
* 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
*/
/*
* CPU specific code
*
* written or collected and sometimes rewritten by
* Magnus Damm <damm@bitsmart.com>
*
* minor modifications by
* Wolfgang Denk <wd@denx.de>
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <asm/cache.h>
#include <ppc4xx.h>
#if defined(CONFIG_405GP)
#define PCI_ARBITER_ENABLED (mfdcr(strap) & PSR_PCI_ARBIT_EN)
#define PCI_ASYNC_ENABLED (mfdcr(strap) & PSR_PCI_ASYNC_EN)
#endif
#if defined(CONFIG_405EP)
#define PCI_ARBITER_ENABLED (mfdcr(cpc0_pci) & CPC0_PCI_ARBIT_EN)
#define I2C_BOOTROM_ENABLED (mfdcr(cpc0_boot) & CPC0_BOOT_SEP)
#endif
#if defined(CONFIG_440EP) || defined(CONFIG_440GR)
#define SDR0_SDSTP1_PAE (0x80000000 >> 21)
#define SDR0_SDSTP1_PAME (0x80000000 >> 27)
#define PCI_ARBITER_ENABLED (mfdcr(cpc0_strp1) & SDR0_SDSTP1_PAE)
#define PCI_ASYNC_ENABLED (mfdcr(cpc0_strp1) & SDR0_SDSTP1_PAME)
#endif
#if defined(CONFIG_440GP)
#define CPC0_STRP1_PAE (0x80000000 >> 11)
#define PCI_ARBITER_ENABLED (mfdcr(cpc0_strp1) & CPC0_STRP1_PAE)
#endif
#if defined(CONFIG_440GX)
#define SDR0_SDSTP1_PAE (0x80000000 >> 13)
#define PCI_ARBITER_ENABLED (mfdcr(cpc0_strp1) & SDR0_SDSTP1_PAE)
#endif
#if defined(CONFIG_440)
#define FREQ_EBC (sys_info.freqEPB)
#else
#define FREQ_EBC (sys_info.freqPLB / sys_info.pllExtBusDiv)
#endif
#if defined(CONFIG_440)
static int do_chip_reset(unsigned long sys0, unsigned long sys1);
#endif
int checkcpu (void)
{
#if !defined(CONFIG_405) /* not used on Xilinx 405 FPGA implementations */
DECLARE_GLOBAL_DATA_PTR;
uint pvr = get_pvr();
ulong clock = gd->cpu_clk;
char buf[32];
#if !defined(CONFIG_IOP480)
sys_info_t sys_info;
puts ("CPU: ");
get_sys_info(&sys_info);
puts("AMCC PowerPC 4");
#if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_405EP)
puts("05");
#endif
#if defined(CONFIG_440)
puts("40");
#endif
switch (pvr) {
case PVR_405GP_RB:
puts("GP Rev. B");
break;
case PVR_405GP_RC:
puts("GP Rev. C");
break;
case PVR_405GP_RD:
puts("GP Rev. D");
break;
#ifdef CONFIG_405GP
case PVR_405GP_RE: /* 405GP rev E and 405CR rev C have same PVR */
puts("GP Rev. E");
break;
#endif
case PVR_405CR_RA:
puts("CR Rev. A");
break;
case PVR_405CR_RB:
puts("CR Rev. B");
break;
#ifdef CONFIG_405CR
case PVR_405CR_RC: /* 405GP rev E and 405CR rev C have same PVR */
puts("CR Rev. C");
break;
#endif
case PVR_405GPR_RB:
puts("GPr Rev. B");
break;
case PVR_405EP_RB:
puts("EP Rev. B");
break;
#if defined(CONFIG_440)
case PVR_440GP_RB:
puts("GP Rev. B");
/* See errata 1.12: CHIP_4 */
if ((mfdcr(cpc0_sys0) != mfdcr(cpc0_strp0)) ||
(mfdcr(cpc0_sys1) != mfdcr(cpc0_strp1)) ){
puts ( "\n\t CPC0_SYSx DCRs corrupted. "
"Resetting chip ...\n");
udelay( 1000 * 1000 ); /* Give time for serial buf to clear */
do_chip_reset ( mfdcr(cpc0_strp0),
mfdcr(cpc0_strp1) );
}
break;
case PVR_440GP_RC:
puts("GP Rev. C");
break;
case PVR_440GX_RA:
puts("GX Rev. A");
break;
case PVR_440GX_RB:
puts("GX Rev. B");
break;
case PVR_440GX_RC:
puts("GX Rev. C");
break;
case PVR_440GX_RF:
puts("GX Rev. F");
break;
case PVR_440EP_RA:
puts("EP Rev. A");
break;
#ifdef CONFIG_440EP
case PVR_440EP_RB: /* 440EP rev B and 440GR rev A have same PVR */
puts("EP Rev. B");
break;
#endif /* CONFIG_440EP */
#ifdef CONFIG_440GR
case PVR_440GR_RA: /* 440EP rev B and 440GR rev A have same PVR */
puts("GR Rev. A");
break;
#endif /* CONFIG_440GR */
#endif /* CONFIG_440 */
default:
printf (" UNKNOWN (PVR=%08x)", pvr);
break;
}
printf (" at %s MHz (PLB=%lu, OPB=%lu, EBC=%lu MHz)\n", strmhz(buf, clock),
sys_info.freqPLB / 1000000,
sys_info.freqPLB / sys_info.pllOpbDiv / 1000000,
FREQ_EBC / 1000000);
#if defined(I2C_BOOTROM_ENABLED)
printf (" IIC Boot EEPROM %sabled\n", I2C_BOOTROM_ENABLED ? "en" : "dis");
#endif
#if defined(PCI_ARBITER_ENABLED)
printf (" %sternal PCI arbiter enabled",
(PCI_ARBITER_ENABLED) ? "In" : "Ex");
#endif
#if defined(PCI_ASYNC_ENABLED)
if (PCI_ASYNC_ENABLED) {
printf (", PCI async ext clock used");
} else {
printf (", PCI sync clock at %lu MHz",
sys_info.freqPLB / sys_info.pllPciDiv / 1000000);
}
#endif
#if defined(PCI_ARBITER_ENABLED) || defined(PCI_ASYNC_ENABLED)
putc('\n');
#endif
#if defined(CONFIG_405EP)
printf (" 16 kB I-Cache 16 kB D-Cache");
#elif defined(CONFIG_440)
printf (" 32 kB I-Cache 32 kB D-Cache");
#else
printf (" 16 kB I-Cache %d kB D-Cache",
((pvr | 0x00000001) == PVR_405GPR_RB) ? 16 : 8);
#endif
#endif /* !defined(CONFIG_IOP480) */
#if defined(CONFIG_IOP480)
printf ("PLX IOP480 (PVR=%08x)", pvr);
printf (" at %s MHz:", strmhz(buf, clock));
printf (" %u kB I-Cache", 4);
printf (" %u kB D-Cache", 2);
#endif
#endif /* !defined(CONFIG_405) */
putc ('\n');
return 0;
}
/* ------------------------------------------------------------------------- */
int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
#if defined(CONFIG_YOSEMITE) || defined(CONFIG_YELLOWSTONE)
/*give reset to BCSR*/
*(unsigned char*)(CFG_BCSR_BASE | 0x06) = 0x09;
#else
/*
* Initiate system reset in debug control register DBCR
*/
__asm__ __volatile__("lis 3, 0x3000" ::: "r3");
#if defined(CONFIG_440)
__asm__ __volatile__("mtspr 0x134, 3");
#else
__asm__ __volatile__("mtspr 0x3f2, 3");
#endif
#endif/* defined(CONFIG_YOSEMITE) || defined(CONFIG_YELLOWSTONE)*/
return 1;
}
#if defined(CONFIG_440)
static int do_chip_reset (unsigned long sys0, unsigned long sys1)
{
/* Changes to cpc0_sys0 and cpc0_sys1 require chip
* reset.
*/
mtdcr (cntrl0, mfdcr (cntrl0) | 0x80000000); /* Set SWE */
mtdcr (cpc0_sys0, sys0);
mtdcr (cpc0_sys1, sys1);
mtdcr (cntrl0, mfdcr (cntrl0) & ~0x80000000); /* Clr SWE */
mtspr (dbcr0, 0x20000000); /* Reset the chip */
return 1;
}
#endif
/*
* Get timebase clock frequency
*/
unsigned long get_tbclk (void)
{
#if !defined(CONFIG_IOP480)
sys_info_t sys_info;
get_sys_info(&sys_info);
return (sys_info.freqProcessor);
#else
return (66000000);
#endif
}
#if defined(CONFIG_WATCHDOG)
void
watchdog_reset(void)
{
int re_enable = disable_interrupts();
reset_4xx_watchdog();
if (re_enable) enable_interrupts();
}
void
reset_4xx_watchdog(void)
{
/*
* Clear TSR(WIS) bit
*/
mtspr(tsr, 0x40000000);
}
#endif /* CONFIG_WATCHDOG */
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