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u-boot/board/uc101/uc101.c
Heiko Schocher 00b6d927ba 5xxx, fdt: move fdt_fixup_memory() to cpu.c file 
u-boot updates, before starting Linux, the memory node in the
DTS. As this is a "standard" feature, move this functionality
to the cpu.c file for mpc5xxx and mpc512x processors.

Signed-off-by: Heiko Schocher <hs@denx.de>
2009-12-08 22:13:02 +01:00

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/*
* (C) Copyright 2006
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* (C) Copyright 2003-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004
* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
*
* (C) Copyright 2004
* Martin Krause, TQ-Systems GmbH, martin.krause@tqs.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
*/
#include <common.h>
#include <fdt_support.h>
#include <mpc5xxx.h>
#include <pci.h>
#include <malloc.h>
/* some SIMPLE GPIO Pins */
#define GPIO_USB_8 (31-12)
#define GPIO_USB_7 (31-13)
#define GPIO_USB_6 (31-14)
#define GPIO_USB_0 (31-15)
#define GPIO_PSC3_7 (31-18)
#define GPIO_PSC3_6 (31-19)
#define GPIO_PSC3_1 (31-22)
#define GPIO_PSC3_0 (31-23)
/* some simple Interrupt GPIO Pins */
#define GPIO_PSC3_8 2
#define GPIO_USB1_9 3
#define GPT_OUT_0 0x00000027
#define GPT_OUT_1 0x00000037
#define GPT_DISABLE 0x00000000 /* GPT pin disabled */
#define GP_SIMP_ENABLE_O(n, v) {pgpio->simple_dvo |= (v << n); \
pgpio->simple_ddr |= (1 << n); \
pgpio->simple_gpioe |= (1 << n); \
}
#define GP_SIMP_ENABLE_I(n) { pgpio->simple_ddr |= ~(1 << n); \
pgpio->simple_gpioe |= (1 << n); \
}
#define GP_SIMP_SET_O(n, v) (pgpio->simple_dvo = v ? \
(pgpio->simple_dvo | (1 << n)) : \
(pgpio->simple_dvo & ~(1 << n)) )
#define GP_SIMP_GET_O(n) ((pgpio->simple_dvo >> n) & 1)
#define GP_SIMP_GET_I(n) ((pgpio->simple_ival >> n) & 1)
#define GP_SINT_SET_O(n, v) (pgpio->sint_dvo = v ? \
(pgpio->sint_dvo | (1 << n)) : \
(pgpio->sint_dvo & ~(1 << n)) )
#define GP_SINT_ENABLE_O(n, v) {pgpio->sint_ode &= ~(1 << n); \
pgpio->sint_ddr |= (1 << n); \
GP_SINT_SET_O(n, v); \
pgpio->sint_gpioe |= (1 << n); \
}
#define GP_SINT_ENABLE_I(n) { pgpio->sint_ddr |= ~(1 << n); \
pgpio->sint_gpioe |= (1 << n); \
}
#define GP_SINT_GET_O(n) ((pgpio->sint_ival >> n) & 1)
#define GP_SINT_GET_I(n) ((pgpio-ntt_ival >> n) & 1)
#define GP_TIMER_ENABLE_O(n, v) ( \
((volatile struct mpc5xxx_gpt *)(MPC5XXX_GPT + n))->emsr = v ? \
GPT_OUT_1 : \
GPT_OUT_0 )
#define GP_TIMER_SET_O(n, v) GP_TIMER_ENABLE_O(n, v)
#define GP_TIMER_GET_O(n, v) ( \
(((volatile struct mpc5xxx_gpt *)(MPC5XXX_GPT + n))->emsr & 0x10) >> 4)
#define GP_TIMER_GET_I(n, v) ( \
(((volatile struct mpc5xxx_gpt *)(MPC5XXX_GPT + n))->sr & 0x100) >> 8)
#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
/* unlock mode register */
*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
__asm__ volatile ("sync");
/* precharge all banks */
*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set mode register: extended mode */
*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
__asm__ volatile ("sync");
/* set mode register: reset DLL */
*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
__asm__ volatile ("sync");
#endif
/* precharge all banks */
*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
__asm__ volatile ("sync");
/* auto refresh */
*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
__asm__ volatile ("sync");
/* set mode register */
*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
__asm__ volatile ("sync");
/* normal operation */
*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
__asm__ volatile ("sync");
}
#endif
/*
* ATTENTION: Although partially referenced initdram does NOT make real use
* use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
* is something else than 0x00000000.
*/
phys_size_t initdram (int board_type)
{
ulong dramsize = 0;
#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
/* setup SDRAM chip selects */
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x40000000; /* disabled */
__asm__ volatile ("sync");
/* setup config registers */
*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set tap delay */
*(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
__asm__ volatile ("sync");
#endif
/* find RAM size using SDRAM CS0 only */
sdram_start(0);
test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
sdram_start(1);
test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
if (test1 > test2) {
sdram_start(0);
dramsize = test1;
} else {
dramsize = test2;
}
/* memory smaller than 1MB is impossible */
if (dramsize < (1 << 20)) {
dramsize = 0;
}
/* set SDRAM CS0 size according to the amount of RAM found */
if (dramsize > 0) {
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
__builtin_ffs(dramsize >> 20) - 1;
} else {
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
}
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
#else /* CONFIG_SYS_RAMBOOT */
/* retrieve size of memory connected to SDRAM CS0 */
dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
if (dramsize >= 0x13) {
dramsize = (1 << (dramsize - 0x13)) << 20;
} else {
dramsize = 0;
}
/* retrieve size of memory connected to SDRAM CS1 */
dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
if (dramsize2 >= 0x13) {
dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
} else {
dramsize2 = 0;
}
#endif /* CONFIG_SYS_RAMBOOT */
/* return dramsize + dramsize2; */
return dramsize;
}
int checkboard (void)
{
puts ("Board: MAN UC101\n");
/* clear the Display */
*(char *)(CONFIG_SYS_DISP_CWORD) = 0x80;
return 0;
}
static void init_ports (void)
{
volatile struct mpc5xxx_gpio *pgpio =
(struct mpc5xxx_gpio *)MPC5XXX_GPIO;
GP_SIMP_ENABLE_I(GPIO_USB_8); /* HEX Bit 3 */
GP_SIMP_ENABLE_I(GPIO_USB_7); /* HEX Bit 2 */
GP_SIMP_ENABLE_I(GPIO_USB_6); /* HEX Bit 1 */
GP_SIMP_ENABLE_I(GPIO_USB_0); /* HEX Bit 0 */
GP_SIMP_ENABLE_I(GPIO_PSC3_0); /* Switch Menue A */
GP_SIMP_ENABLE_I(GPIO_PSC3_1); /* Switch Menue B */
GP_SIMP_ENABLE_I(GPIO_PSC3_6); /* Switch Cold_Warm */
GP_SIMP_ENABLE_I(GPIO_PSC3_7); /* Switch Restart */
GP_SINT_ENABLE_O(GPIO_PSC3_8, 0); /* LED H2 */
GP_SINT_ENABLE_O(GPIO_USB1_9, 0); /* LED H3 */
GP_TIMER_ENABLE_O(4, 0); /* LED H4 */
GP_TIMER_ENABLE_O(5, 0); /* LED H5 */
GP_TIMER_ENABLE_O(3, 0); /* LED HB */
GP_TIMER_ENABLE_O(1, 0); /* RES_COLDSTART */
}
#ifdef CONFIG_PREBOOT
static uchar kbd_magic_prefix[] = "key_magic";
static uchar kbd_command_prefix[] = "key_cmd";
struct kbd_data_t {
char s1;
};
struct kbd_data_t* get_keys (struct kbd_data_t *kbd_data)
{
volatile struct mpc5xxx_gpio *pgpio =
(struct mpc5xxx_gpio *)MPC5XXX_GPIO;
kbd_data->s1 = GP_SIMP_GET_I(GPIO_USB_8) << 3 | \
GP_SIMP_GET_I(GPIO_USB_7) << 2 | \
GP_SIMP_GET_I(GPIO_USB_6) << 1 | \
GP_SIMP_GET_I(GPIO_USB_0) << 0;
return kbd_data;
}
static int compare_magic (const struct kbd_data_t *kbd_data, char *str)
{
char s1 = str[0];
if (s1 >= '0' && s1 <= '9')
s1 -= '0';
else if (s1 >= 'a' && s1 <= 'f')
s1 = s1 - 'a' + 10;
else if (s1 >= 'A' && s1 <= 'F')
s1 = s1 - 'A' + 10;
else
return -1;
if (s1 != kbd_data->s1) return -1;
return 0;
}
static char *key_match (const struct kbd_data_t *kbd_data)
{
char magic[sizeof (kbd_magic_prefix) + 1];
char *suffix;
char *kbd_magic_keys;
/*
* The following string defines the characters that can be appended
* to "key_magic" to form the names of environment variables that
* hold "magic" key codes, i. e. such key codes that can cause
* pre-boot actions. If the string is empty (""), then only
* "key_magic" is checked (old behaviour); the string "125" causes
* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
*/
if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
kbd_magic_keys = "";
/* loop over all magic keys;
* use '\0' suffix in case of empty string
*/
for (suffix = kbd_magic_keys; *suffix ||
suffix == kbd_magic_keys; ++suffix) {
sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
if (compare_magic(kbd_data, getenv(magic)) == 0) {
char cmd_name[sizeof (kbd_command_prefix) + 1];
char *cmd;
sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
cmd = getenv (cmd_name);
return (cmd);
}
}
return (NULL);
}
#endif /* CONFIG_PREBOOT */
int misc_init_r (void)
{
/* Init the I/O ports */
init_ports ();
#ifdef CONFIG_PREBOOT
struct kbd_data_t kbd_data;
/* Decode keys */
char *str = strdup (key_match (get_keys (&kbd_data)));
/* Set or delete definition */
setenv ("preboot", str);
free (str);
#endif /* CONFIG_PREBOOT */
return 0;
}
int board_early_init_r (void)
{
*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
*(vu_long *)MPC5XXX_BOOTCS_START =
*(vu_long *)MPC5XXX_CS0_START = START_REG(CONFIG_SYS_FLASH_BASE);
*(vu_long *)MPC5XXX_BOOTCS_STOP =
*(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE);
/* Interbus enable it here ?? */
*(vu_long *)MPC5XXX_GPT6_ENABLE = GPT_OUT_1;
return 0;
}
#ifdef CONFIG_PCI
static struct pci_controller hose;
extern void pci_mpc5xxx_init(struct pci_controller *);
void pci_init_board(void)
{
pci_mpc5xxx_init(&hose);
}
#endif
#if defined(CONFIG_HW_WATCHDOG)
void hw_watchdog_reset(void)
{
/* Trigger HW Watchdog with TIMER_0 */
*(vu_long *)MPC5XXX_GPT0_ENABLE = GPT_OUT_1;
*(vu_long *)MPC5XXX_GPT0_ENABLE = GPT_OUT_0;
}
#endif
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
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