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u-boot/board/mucmc52/mucmc52.c
Heiko Schocher 7f625fc6d3 mpc5200, mucmc52, uc101: config cleanup 
- As these boards are similiar, collect common config options
  in manroland/common.h and manroland/mpc52xx-common.h
  for mpc5200 specific common options for this manufacturer.
- add OF support
- update default environment

Signed-off-by: Heiko Schocher <hs@denx.de>

Minor edit of commit message.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-09-25 01:19:17 +02:00

407 lines
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/*
* (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
*
* (C) Copyright 2008
* Heiko Schocher, DENX Software Engineering, hs@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
*/
#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
#include <malloc.h>
#include <asm/processor.h>
#include <asm/io.h>
#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
/* unlock mode register */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
(SDRAM_CONTROL | 0x80000000 | hi_addr_bit));
__asm__ volatile ("sync");
/* precharge all banks */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set mode register: extended mode */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_EMODE));
__asm__ volatile ("sync");
/* set mode register: reset DLL */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE,
(SDRAM_MODE | 0x04000000));
__asm__ volatile ("sync");
#endif
/* precharge all banks */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
__asm__ volatile ("sync");
/* auto refresh */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
(SDRAM_CONTROL | 0x80000004 | hi_addr_bit));
__asm__ volatile ("sync");
/* set mode register */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_MODE));
__asm__ volatile ("sync");
/* normal operation */
out_be32 ((unsigned __iomem *)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;
ulong dramsize2 = 0;
uint svr, pvr;
#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
/* setup SDRAM chip selects */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0x0000001c); /* 512MB at 0x0 */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, 0x80000000);/* disabled */
__asm__ volatile ("sync");
/* setup config registers */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set tap delay */
out_be32 ((unsigned __iomem *)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) {
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG,
(0x13 + __builtin_ffs(dramsize >> 20) - 1));
} else {
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
}
/* let SDRAM CS1 start right after CS0 */
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, (dramsize + 0x0000001c));/*512MB*/
/* find RAM size using SDRAM CS1 only */
if (!dramsize)
sdram_start (0);
test2 = test1 = get_ram_size ((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
if (!dramsize) {
sdram_start (1);
test2 = get_ram_size ((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
}
if (test1 > test2) {
sdram_start (0);
dramsize2 = test1;
} else {
dramsize2 = test2;
}
/* memory smaller than 1MB is impossible */
if (dramsize2 < (1 << 20)) {
dramsize2 = 0;
}
/* set SDRAM CS1 size according to the amount of RAM found */
if (dramsize2 > 0) {
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG,
(dramsize | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
} else {
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
}
#else /* CONFIG_SYS_RAMBOOT */
/* retrieve size of memory connected to SDRAM CS0 */
dramsize = in_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
if (dramsize >= 0x13) {
dramsize = (1 << (dramsize - 0x13)) << 20;
} else {
dramsize = 0;
}
/* retrieve size of memory connected to SDRAM CS1 */
dramsize2 = in_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
if (dramsize2 >= 0x13) {
dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
} else {
dramsize2 = 0;
}
#endif /* CONFIG_SYS_RAMBOOT */
/*
* On MPC5200B we need to set the special configuration delay in the
* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
*
* "The SDelay should be written to a value of 0x00000004. It is
* required to account for changes caused by normal wafer processing
* parameters."
*/
svr = get_svr();
pvr = get_pvr();
if ((SVR_MJREV(svr) >= 2) &&
(PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_SDELAY, 0x04);
__asm__ volatile ("sync");
}
return dramsize + dramsize2;
}
int checkboard (void)
{
puts ("Board: MUC.MC-52 HW WDT ");
#if defined(CONFIG_HW_WATCHDOG)
puts ("enabled\n");
#else
puts ("disabled\n");
#endif
return 0;
}
#ifdef CONFIG_PREBOOT
static uchar kbd_magic_prefix[] = "key_magic";
static uchar kbd_command_prefix[] = "key_cmd";
#define S1_ROT 0xf0
#define S2_Q 0x40
#define S2_M 0x20
struct kbd_data_t {
char s1;
char s2;
};
struct kbd_data_t* get_keys (struct kbd_data_t *kbd_data)
{
kbd_data->s1 = in_8 ((volatile uchar*)CONFIG_SYS_STATUS1_BASE);
kbd_data->s2 = in_8 ((volatile uchar*)CONFIG_SYS_STATUS2_BASE);
return kbd_data;
}
static int compare_magic (const struct kbd_data_t *kbd_data, char *str)
{
char s1 = str[0];
char s2;
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_ROT & kbd_data->s1) >> 4) != s1)
return -1;
s2 = (S2_Q | S2_M) & kbd_data->s2;
switch (str[1]) {
case 'q':
case 'Q':
if (s2 == S2_Q)
return -1;
break;
case 'm':
case 'M':
if (s2 == S2_M)
return -1;
break;
case '\0':
if (s2 == (S2_Q | S2_M))
return 0;
default:
return -1;
}
if (str[2])
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)
{
#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 */
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x38), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x39), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3A), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3B), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3C), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3D), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3E), ' ');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3F), ' ');
return 0;
}
int board_early_init_r (void)
{
out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG, in_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG) & ~0x1);
out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_START, START_REG(CONFIG_SYS_FLASH_BASE));
out_be32 ((unsigned __iomem *)MPC5XXX_CS0_START, START_REG(CONFIG_SYS_FLASH_BASE));
out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_STOP,
STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE));
out_be32 ((unsigned __iomem *)MPC5XXX_CS0_STOP,
STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE));
return 0;
}
int last_stage_init (void)
{
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x38), 'M');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x39), 'U');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3A), 'C');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3B), '.');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3C), 'M');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3D), 'C');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3E), '5');
out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3F), '2');
return 0;
}
#if defined(CONFIG_HW_WATCHDOG)
#define GPT_OUT_0 0x00000027
#define GPT_OUT_1 0x00000037
void hw_watchdog_reset (void)
{
/* Trigger HW Watchdog with TIMER_0 */
out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_1);
out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_0);
}
#endif
#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_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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