mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-16 23:18:51 +09:00
![Tom Rini](/assets/img/avatar_default.png)
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>
203 lines
4.4 KiB
C
203 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2006,2009-2010 Freescale Semiconductor, Inc.
|
|
* Jeff Brown
|
|
* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
|
|
*/
|
|
|
|
#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>
|
|
#include <asm/ppc.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.freq_processor));
|
|
printf("MPX:%-4s MHz\n", strmhz(buf1, sysinfo.freq_systembus));
|
|
printf(" DDR:%-4s MHz (%s MT/s data rate), ",
|
|
strmhz(buf1, sysinfo.freq_systembus / 2),
|
|
strmhz(buf2, sysinfo.freq_systembus));
|
|
|
|
if (sysinfo.freq_localbus > LCRR_CLKDIV) {
|
|
printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
|
|
} else {
|
|
printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
|
|
sysinfo.freq_localbus);
|
|
}
|
|
|
|
puts("L1: D-cache 32 KiB enabled\n");
|
|
puts(" I-cache 32 KiB enabled\n");
|
|
|
|
puts("L2: ");
|
|
if (get_l2cr() & 0x80000000) {
|
|
#if defined(CONFIG_ARCH_MPC8610)
|
|
puts("256");
|
|
#elif defined(CONFIG_ARCH_MPC8641)
|
|
puts("512");
|
|
#endif
|
|
puts(" KiB 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.freq_systembus + 3L) / 4L;
|
|
}
|
|
|
|
|
|
#if defined(CONFIG_WATCHDOG)
|
|
void
|
|
watchdog_reset(void)
|
|
{
|
|
#if defined(CONFIG_ARCH_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 print_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);
|
|
}
|