mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
cdb749778a
While running from flash, i. e. before relocation, we have only a limited C runtime environment without writable data segment. In this phase, some configurations (for example with environment in EEPROM) must not use the normal getenv(), but a special function. This function had been called getenv_r(), with the idea that the "_r" suffix would mean the same as in the _r_eentrant versions of some of the C library functions (for example getdate vs. getdate_r, getgrent vs. getgrent_r, etc.). Unfortunately this was a misleading name, as in U-Boot the "_r" generally means "running from RAM", i. e. _after_ relocation. To avoid confusion, rename into getenv_f() [as "running from flash"] Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de>
261 lines
7.3 KiB
C
261 lines
7.3 KiB
C
/*
|
|
* (C) Copyright 2004
|
|
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.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 <asm/processor.h>
|
|
#include <command.h>
|
|
|
|
#define MEM_MCOPT1_INIT_VAL 0x00800000
|
|
#define MEM_RTR_INIT_VAL 0x04070000
|
|
#define MEM_PMIT_INIT_VAL 0x07c00000
|
|
#define MEM_MB0CF_INIT_VAL 0x00082001
|
|
#define MEM_MB1CF_INIT_VAL 0x04082000
|
|
#define MEM_SDTR1_INIT_VAL 0x00854005
|
|
#define SDRAM0_CFG_ENABLE 0x80000000
|
|
|
|
#define CONFIG_SYS_SDRAM_SIZE 0x04000000 /* 64 MB */
|
|
|
|
int board_early_init_f (void)
|
|
{
|
|
#if 0 /* test-only */
|
|
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
mtdcr (UIC0ER, 0x00000000); /* disable all ints */
|
|
mtdcr (UIC0CR, 0x00000010);
|
|
mtdcr (UIC0PR, 0xFFFF7FF0); /* set int polarities */
|
|
mtdcr (UIC0TR, 0x00000010); /* set int trigger levels */
|
|
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
#else
|
|
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
mtdcr(UIC0ER, 0x00000000); /* disable all ints */
|
|
mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
|
|
mtdcr(UIC0PR, 0xFFFFFFF0); /* set int polarities */
|
|
mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
|
|
mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/
|
|
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
|
|
#endif
|
|
|
|
#if 1 /* test-only */
|
|
/*
|
|
* EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
|
|
*/
|
|
mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int misc_init_f (void)
|
|
{
|
|
return 0; /* dummy implementation */
|
|
}
|
|
|
|
|
|
int misc_init_r (void)
|
|
{
|
|
#if defined(CONFIG_CMD_NAND)
|
|
/*
|
|
* Set NAND-FLASH GPIO signals to default
|
|
*/
|
|
out32(GPIO0_OR, in32(GPIO0_OR) & ~(CONFIG_SYS_NAND_CLE | CONFIG_SYS_NAND_ALE));
|
|
out32(GPIO0_OR, in32(GPIO0_OR) | CONFIG_SYS_NAND_CE);
|
|
#endif
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Check Board Identity:
|
|
*/
|
|
int checkboard (void)
|
|
{
|
|
char str[64];
|
|
int i = getenv_f("serial#", str, sizeof(str));
|
|
|
|
puts ("Board: ");
|
|
|
|
if (i == -1) {
|
|
puts ("### No HW ID - assuming G2000");
|
|
} else {
|
|
puts(str);
|
|
}
|
|
|
|
putc ('\n');
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* -------------------------------------------------------------------------
|
|
G2000 rev B is an embeded design. we don't read for spd of this version.
|
|
Doing static SDRAM controller configuration in the following section.
|
|
------------------------------------------------------------------------- */
|
|
|
|
long int init_sdram_static_settings(void)
|
|
{
|
|
/* disable memcontroller so updates work */
|
|
mtsdram(SDRAM0_CFG, MEM_MCOPT1_INIT_VAL);
|
|
mtsdram(SDRAM0_RTR, MEM_RTR_INIT_VAL);
|
|
mtsdram(SDRAM0_PMIT, MEM_PMIT_INIT_VAL);
|
|
mtsdram(SDRAM0_B0CR, MEM_MB0CF_INIT_VAL);
|
|
mtsdram(SDRAM0_B1CR, MEM_MB1CF_INIT_VAL);
|
|
mtsdram(SDRAM0_TR, MEM_SDTR1_INIT_VAL);
|
|
|
|
/* SDRAM have a power on delay, 500 micro should do */
|
|
udelay(500);
|
|
mtsdram(SDRAM0_CFG, MEM_MCOPT1_INIT_VAL|SDRAM0_CFG_ENABLE);
|
|
|
|
return (CONFIG_SYS_SDRAM_SIZE); /* CONFIG_SYS_SDRAM_SIZE is in G2000.h */
|
|
}
|
|
|
|
|
|
phys_size_t initdram (int board_type)
|
|
{
|
|
long int ret;
|
|
|
|
/* flzt, we can still turn this on in the future */
|
|
/* #ifdef CONFIG_SPD_EEPROM
|
|
ret = spd_sdram ();
|
|
#else
|
|
ret = init_sdram_static_settings();
|
|
#endif
|
|
*/
|
|
|
|
ret = init_sdram_static_settings();
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if 0 /* test-only !!! */
|
|
int do_dumpebc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
ulong ap, cr;
|
|
|
|
printf("\nEBC registers for PPC405GP:\n");
|
|
mfebc(PB0AP, ap); mfebc(PB0CR, cr);
|
|
printf("0: AP=%08lx CP=%08lx\n", ap, cr);
|
|
mfebc(PB1AP, ap); mfebc(PB1CR, cr);
|
|
printf("1: AP=%08lx CP=%08lx\n", ap, cr);
|
|
mfebc(PB2AP, ap); mfebc(PB2CR, cr);
|
|
printf("2: AP=%08lx CP=%08lx\n", ap, cr);
|
|
mfebc(PB3AP, ap); mfebc(PB3CR, cr);
|
|
printf("3: AP=%08lx CP=%08lx\n", ap, cr);
|
|
mfebc(PB4AP, ap); mfebc(PB4CR, cr);
|
|
printf("4: AP=%08lx CP=%08lx\n", ap, cr);
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
U_BOOT_CMD(
|
|
dumpebc, 1, 1, do_dumpebc,
|
|
"Dump all EBC registers",
|
|
""
|
|
);
|
|
|
|
|
|
int do_dumpdcr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
int i;
|
|
|
|
printf("\nDevice Configuration Registers (DCR's) for PPC405GP:");
|
|
for (i=0; i<=0x1e0; i++) {
|
|
if (!(i % 0x8)) {
|
|
printf("\n%04x ", i);
|
|
}
|
|
printf("%08lx ", get_dcr(i));
|
|
}
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
U_BOOT_CMD(
|
|
dumpdcr, 1, 1, do_dumpdcr,
|
|
"Dump all DCR registers",
|
|
""
|
|
);
|
|
|
|
|
|
int do_dumpspr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
printf("\nSpecial Purpose Registers (SPR's) for PPC405GP:");
|
|
printf("\n%04x %08x ", 947, mfspr(947));
|
|
printf("\n%04x %08x ", 9, mfspr(9));
|
|
printf("\n%04x %08x ", 1014, mfspr(1014));
|
|
printf("\n%04x %08x ", 1015, mfspr(1015));
|
|
printf("\n%04x %08x ", 1010, mfspr(1010));
|
|
printf("\n%04x %08x ", 957, mfspr(957));
|
|
printf("\n%04x %08x ", 1008, mfspr(1008));
|
|
printf("\n%04x %08x ", 1018, mfspr(1018));
|
|
printf("\n%04x %08x ", 954, mfspr(954));
|
|
printf("\n%04x %08x ", 950, mfspr(950));
|
|
printf("\n%04x %08x ", 951, mfspr(951));
|
|
printf("\n%04x %08x ", 981, mfspr(981));
|
|
printf("\n%04x %08x ", 980, mfspr(980));
|
|
printf("\n%04x %08x ", 982, mfspr(982));
|
|
printf("\n%04x %08x ", 1012, mfspr(1012));
|
|
printf("\n%04x %08x ", 1013, mfspr(1013));
|
|
printf("\n%04x %08x ", 948, mfspr(948));
|
|
printf("\n%04x %08x ", 949, mfspr(949));
|
|
printf("\n%04x %08x ", 1019, mfspr(1019));
|
|
printf("\n%04x %08x ", 979, mfspr(979));
|
|
printf("\n%04x %08x ", 8, mfspr(8));
|
|
printf("\n%04x %08x ", 945, mfspr(945));
|
|
printf("\n%04x %08x ", 987, mfspr(987));
|
|
printf("\n%04x %08x ", 287, mfspr(287));
|
|
printf("\n%04x %08x ", 953, mfspr(953));
|
|
printf("\n%04x %08x ", 955, mfspr(955));
|
|
printf("\n%04x %08x ", 272, mfspr(272));
|
|
printf("\n%04x %08x ", 273, mfspr(273));
|
|
printf("\n%04x %08x ", 274, mfspr(274));
|
|
printf("\n%04x %08x ", 275, mfspr(275));
|
|
printf("\n%04x %08x ", 260, mfspr(260));
|
|
printf("\n%04x %08x ", 276, mfspr(276));
|
|
printf("\n%04x %08x ", 261, mfspr(261));
|
|
printf("\n%04x %08x ", 277, mfspr(277));
|
|
printf("\n%04x %08x ", 262, mfspr(262));
|
|
printf("\n%04x %08x ", 278, mfspr(278));
|
|
printf("\n%04x %08x ", 263, mfspr(263));
|
|
printf("\n%04x %08x ", 279, mfspr(279));
|
|
printf("\n%04x %08x ", 26, mfspr(26));
|
|
printf("\n%04x %08x ", 27, mfspr(27));
|
|
printf("\n%04x %08x ", 990, mfspr(990));
|
|
printf("\n%04x %08x ", 991, mfspr(991));
|
|
printf("\n%04x %08x ", 956, mfspr(956));
|
|
printf("\n%04x %08x ", 284, mfspr(284));
|
|
printf("\n%04x %08x ", 285, mfspr(285));
|
|
printf("\n%04x %08x ", 986, mfspr(986));
|
|
printf("\n%04x %08x ", 984, mfspr(984));
|
|
printf("\n%04x %08x ", 256, mfspr(256));
|
|
printf("\n%04x %08x ", 1, mfspr(1));
|
|
printf("\n%04x %08x ", 944, mfspr(944));
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
U_BOOT_CMD(
|
|
dumpspr, 1, 1, do_dumpspr,
|
|
"Dump all SPR registers",
|
|
""
|
|
);
|
|
#endif
|