u-boot/arch/powerpc/cpu/mpc83xx/cpu.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

226 lines
4.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
*/
/*
* CPU specific code for the MPC83xx family.
*
* Derived from the MPC8260 and MPC85xx.
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <mpc83xx.h>
#include <asm/processor.h>
#include <linux/libfdt.h>
#include <tsec.h>
#include <netdev.h>
#include <fsl_esdhc.h>
#if defined(CONFIG_BOOTCOUNT_LIMIT) && !defined(CONFIG_MPC831x)
#include <linux/immap_qe.h>
#include <asm/io.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
int checkcpu(void)
{
volatile immap_t *immr;
ulong clock = gd->cpu_clk;
u32 pvr = get_pvr();
u32 spridr;
char buf[32];
int ret;
int i;
const struct cpu_type {
char name[15];
u32 partid;
} cpu_type_list [] = {
CPU_TYPE_ENTRY(8308),
CPU_TYPE_ENTRY(8309),
CPU_TYPE_ENTRY(8311),
CPU_TYPE_ENTRY(8313),
CPU_TYPE_ENTRY(8314),
CPU_TYPE_ENTRY(8315),
CPU_TYPE_ENTRY(8321),
CPU_TYPE_ENTRY(8323),
CPU_TYPE_ENTRY(8343),
CPU_TYPE_ENTRY(8347_TBGA_),
CPU_TYPE_ENTRY(8347_PBGA_),
CPU_TYPE_ENTRY(8349),
CPU_TYPE_ENTRY(8358_TBGA_),
CPU_TYPE_ENTRY(8358_PBGA_),
CPU_TYPE_ENTRY(8360),
CPU_TYPE_ENTRY(8377),
CPU_TYPE_ENTRY(8378),
CPU_TYPE_ENTRY(8379),
};
immr = (immap_t *)CONFIG_SYS_IMMR;
ret = prt_83xx_rsr();
if (ret)
return ret;
puts("CPU: ");
switch (pvr & 0xffff0000) {
case PVR_E300C1:
printf("e300c1, ");
break;
case PVR_E300C2:
printf("e300c2, ");
break;
case PVR_E300C3:
printf("e300c3, ");
break;
case PVR_E300C4:
printf("e300c4, ");
break;
default:
printf("Unknown core, ");
}
spridr = immr->sysconf.spridr;
for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
if (cpu_type_list[i].partid == PARTID_NO_E(spridr)) {
puts("MPC");
puts(cpu_type_list[i].name);
if (IS_E_PROCESSOR(spridr))
puts("E");
if ((SPR_FAMILY(spridr) == SPR_834X_FAMILY ||
SPR_FAMILY(spridr) == SPR_836X_FAMILY) &&
REVID_MAJOR(spridr) >= 2)
puts("A");
printf(", Rev: %d.%d", REVID_MAJOR(spridr),
REVID_MINOR(spridr));
break;
}
if (i == ARRAY_SIZE(cpu_type_list))
printf("(SPRIDR %08x unknown), ", spridr);
printf(" at %s MHz, ", strmhz(buf, clock));
printf("CSB: %s MHz\n", strmhz(buf, gd->arch.csb_clk));
return 0;
}
int
do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong msr;
#ifndef MPC83xx_RESET
ulong addr;
#endif
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
puts("Resetting the board.\n");
#ifdef MPC83xx_RESET
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
msr &= ~( MSR_EE | MSR_IR | MSR_DR);
__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
/* enable Reset Control Reg */
immap->reset.rpr = 0x52535445;
__asm__ __volatile__ ("sync");
__asm__ __volatile__ ("isync");
/* confirm Reset Control Reg is enabled */
while(!((immap->reset.rcer) & RCER_CRE));
udelay(200);
/* perform reset, only one bit */
immap->reset.rcr = RCR_SWHR;
#else /* ! MPC83xx_RESET */
immap->reset.rmr = RMR_CSRE; /* Checkstop Reset enable */
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
/*
* Trying to execute the next instruction at a non-existing address
* should cause a machine check, resulting in reset
*/
addr = CONFIG_SYS_RESET_ADDRESS;
((void (*)(void)) addr) ();
#endif /* MPC83xx_RESET */
return 1;
}
/*
* Get timebase clock frequency (like cpu_clk in Hz)
*/
unsigned long get_tbclk(void)
{
return (gd->bus_clk + 3L) / 4L;
}
#if defined(CONFIG_WATCHDOG)
void watchdog_reset (void)
{
int re_enable = disable_interrupts();
/* Reset the 83xx watchdog */
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
immr->wdt.swsrr = 0x556c;
immr->wdt.swsrr = 0xaa39;
if (re_enable)
enable_interrupts ();
}
#endif
/*
* Initializes on-chip ethernet controllers.
* to override, implement board_eth_init()
*/
int cpu_eth_init(bd_t *bis)
{
#if defined(CONFIG_UEC_ETH)
uec_standard_init(bis);
#endif
#if defined(CONFIG_TSEC_ENET)
tsec_standard_init(bis);
#endif
return 0;
}
/*
* Initializes on-chip MMC controllers.
* to override, implement board_mmc_init()
*/
int cpu_mmc_init(bd_t *bis)
{
#ifdef CONFIG_FSL_ESDHC
return fsl_esdhc_mmc_init(bis);
#else
return 0;
#endif
}