/*
- * (C) Copyright 2003-2004
+ * (C) Copyright 2003-2008
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004
#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
+#include <asm/processor.h>
+#include <malloc.h>
-#ifndef CFG_RAMBOOT
+#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
/*
* ATTENTION: Although partially referenced initdram does NOT make real use
- * use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
+ * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
* is something else than 0x00000000.
*/
-long int initdram (int board_type)
+phys_size_t initdram (int board_type)
{
ulong dramsize = 0;
-#ifndef CFG_RAMBOOT
+#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
+ uint svr, pvr;
/* setup SDRAM chip selects */
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */
/* find RAM size using SDRAM CS0 only */
sdram_start(0);
- test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x20000000);
+ test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
sdram_start(1);
- test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x20000000);
+ test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
if (test1 > test2) {
sdram_start(0);
dramsize = test1;
}
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
-#else /* CFG_RAMBOOT */
+#else /* CONFIG_SYS_RAMBOOT */
/* retrieve size of memory connected to SDRAM CS0 */
dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
dramsize2 = 0;
}
-#endif /* CFG_RAMBOOT */
+#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)) {
+
+ *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
+ __asm__ volatile ("sync");
+ }
/* return dramsize + dramsize2; */
return dramsize;
return 0;
}
-int misc_init_f (void)
+#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 = *((volatile uchar*)(CONFIG_SYS_STATUS1_BASE));
+ kbd_data->s2 = *((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 */
+
return 0;
}
{
*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
*(vu_long *)MPC5XXX_BOOTCS_START =
- *(vu_long *)MPC5XXX_CS0_START = START_REG(CFG_FLASH_BASE);
+ *(vu_long *)MPC5XXX_CS0_START = START_REG(CONFIG_SYS_FLASH_BASE);
*(vu_long *)MPC5XXX_BOOTCS_STOP =
- *(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CFG_FLASH_BASE, CFG_FLASH_SIZE);
+ *(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE);
return 0;
}
#ifdef CONFIG_PCI
projects / u-boot / blobdiff