* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
+#include <asm/processor.h>
+#include <libfdt.h>
+#include <netdev.h>
-#ifndef CFG_RAMBOOT
-static long int dram_size(long int *base, long int maxsize)
-{
- volatile long int *addr;
- ulong cnt, val;
- ulong save[32]; /* to make test non-destructive */
- unsigned char i = 0;
+#if defined(CONFIG_LITE5200B)
+#include "mt46v32m16.h"
+#else
+# if defined(CONFIG_MPC5200_DDR)
+# include "mt46v16m16-75.h"
+# else
+#include "mt48lc16m16a2-75.h"
+# endif
+#endif
- for (cnt = (maxsize / sizeof (long)) >> 1; cnt > 0; cnt >>= 1) {
- addr = base + cnt; /* pointer arith! */
+#ifdef CONFIG_LITE5200B_PM
+/* u-boot part of low-power mode implementation */
+#define SAVED_ADDR (*(void **)0x00000000)
+#define PSC2_4 0x02
- save[i++] = *addr;
- *addr = ~cnt;
- }
+void lite5200b_wakeup(void)
+{
+ unsigned char wakeup_pin;
+ void (*linux_wakeup)(void);
- /* write 0 to base address */
- addr = base;
- save[i] = *addr;
- *addr = 0;
+ /* check PSC2_4, if it's down "QT" is signaling we have a wakeup
+ * from low power mode */
+ *(vu_char *)MPC5XXX_WU_GPIO_ENABLE = PSC2_4;
+ __asm__ volatile ("sync");
- /* check at base address */
- if ((val = *addr) != 0) {
- *addr = save[i];
- return (0);
- }
+ wakeup_pin = *(vu_char *)MPC5XXX_WU_GPIO_DATA_I;
+ if (wakeup_pin & PSC2_4)
+ return;
- for (cnt = 1; cnt < maxsize / sizeof (long); cnt <<= 1) {
- addr = base + cnt; /* pointer arith! */
+ /* acknowledge to "QT"
+ * by holding pin at 1 for 10 uS */
+ *(vu_char *)MPC5XXX_WU_GPIO_DIR = PSC2_4;
+ __asm__ volatile ("sync");
+ *(vu_char *)MPC5XXX_WU_GPIO_DATA_O = PSC2_4;
+ __asm__ volatile ("sync");
+ udelay(10);
- val = *addr;
- *addr = save[--i];
+ /* put ram out of self-refresh */
+ *(vu_long *)MPC5XXX_SDRAM_CTRL |= 0x80000000; /* mode_en */
+ __asm__ volatile ("sync");
+ *(vu_long *)MPC5XXX_SDRAM_CTRL |= 0x50000000; /* cke ref_en */
+ __asm__ volatile ("sync");
+ *(vu_long *)MPC5XXX_SDRAM_CTRL &= ~0x80000000; /* !mode_en */
+ __asm__ volatile ("sync");
+ udelay(10); /* wait a bit */
- if (val != (~cnt)) {
- return (cnt * sizeof (long));
- }
- }
- return (maxsize);
+ /* jump back to linux kernel code */
+ linux_wakeup = SAVED_ADDR;
+ printf("\n\nLooks like we just woke, transferring control to 0x%08lx\n",
+ linux_wakeup);
+ linux_wakeup();
}
+#else
+#define lite5200b_wakeup()
+#endif
+#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
-#ifdef CONFIG_MPC5200_DDR
/* unlock mode register */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f00 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit;
+ *(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 = 0x40090000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
+ __asm__ volatile ("sync");
+
/* set mode register: reset DLL */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x058d0000;
- /* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit;
- /* auto refresh */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f04 | hi_addr_bit;
- /* set mode register */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x018d0000;
- /* normal operation */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x705f0f00 | hi_addr_bit;
-#else
- /* unlock mode register */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0000 | hi_addr_bit;
- /* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0002 | hi_addr_bit;
- /* set mode register */
-#if defined(CONFIG_MPC5200)
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x408d0000;
-#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
+ __asm__ volatile ("sync");
#endif
+
/* precharge all banks */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0002 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* auto refresh */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0004 | hi_addr_bit;
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
+ __asm__ volatile ("sync");
+
/* set mode register */
- *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000;
+ *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+ __asm__ volatile ("sync");
+
/* normal operation */
- *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x504f0000 | hi_addr_bit;
-#endif
+ *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
+ __asm__ volatile ("sync");
}
#endif
-long int initdram (int board_type)
+/*
+ * 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;
-#ifdef CONFIG_MPC5200_DDR
ulong dramsize2 = 0;
-#endif
-#ifndef CFG_RAMBOOT
+ uint svr, pvr;
+
+#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
- /* configure SDRAM start/end */
-#if defined(CONFIG_MPC5200)
+ /* setup SDRAM chip selects */
*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
-
-#ifdef CONFIG_MPC5200_DDR
- /* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0x73722930;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x47770000;
-
- /* set tap delay to 0x10 */
- *(vu_long *)MPC5XXX_CDM_PORCFG = 0x10000000;
-#else
- /* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0xc2233a00;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004;
-#endif
-
-#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000;
- *(vu_long *)MPC5XXX_SDRAM_STOP = 0x0000ffff;/* 2G */
- *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */
+ __asm__ volatile ("sync");
/* setup config registers */
- *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0xc2222600;
- *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+ *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+ __asm__ volatile ("sync");
- /* address select register */
- *(vu_long *)MPC5XXX_SDRAM_XLBSEL = 0x03000000;
+#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 = dram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+ test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
sdram_start(1);
- test2 = dram_size((ulong *)CFG_SDRAM_BASE, 0x80000000);
+ test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
if (test1 > test2) {
sdram_start(0);
dramsize = test1;
} else {
dramsize = test2;
}
-#if defined(CONFIG_MPC5200)
- *(vu_long *)MPC5XXX_SDRAM_CS0CFG =
- (0x13 + __builtin_ffs(dramsize >> 20) - 1);
-#ifdef CONFIG_MPC5200_DDR
+
+ /* 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 */
+ }
+
+ /* let SDRAM CS1 start right after CS0 */
*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
- sdram_start(0);
- test1 = dram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
- sdram_start(1);
- test2 = dram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
+
+ /* find RAM size using SDRAM CS1 only */
+ if (!dramsize)
+ sdram_start(0);
+ test2 = test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
+ if (!dramsize) {
+ sdram_start(1);
+ test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000);
+ }
if (test1 > test2) {
sdram_start(0);
dramsize2 = test1;
} else {
dramsize2 = test2;
}
- *(vu_long *)MPC5XXX_SDRAM_CS1CFG =
- dramsize + (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
-#else
- *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
-#endif
-#elif defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15);
-#endif
-#else /* CFG_RAMBOOT */
-#ifdef CONFIG_MGT5100
- *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */
- dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15);
-#else
- dramsize = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS0CFG - 0x13)) << 20);
-#ifdef CONFIG_MPC5200_DDR
- dramsize2 = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS1CFG - 0x13)) << 20);
-#endif
-#endif
-#endif /* CFG_RAMBOOT */
+ /* memory smaller than 1MB is impossible */
+ if (dramsize2 < (1 << 20)) {
+ dramsize2 = 0;
+ }
-#ifdef CONFIG_MPC5200_DDR
- dramsize += dramsize2;
-#endif
- /* return total ram size */
- return dramsize;
+ /* set SDRAM CS1 size according to the amount of RAM found */
+ if (dramsize2 > 0) {
+ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
+ | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
+ } else {
+ *(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 */
+
+ /*
+ * 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");
+ }
+
+ lite5200b_wakeup();
+
+ return dramsize + dramsize2;
}
int checkboard (void)
{
-#if defined(CONFIG_MPC5200)
+#if defined (CONFIG_LITE5200B)
+ puts ("Board: Freescale Lite5200B\n");
+#else
puts ("Board: Motorola MPC5200 (IceCube)\n");
-#elif defined(CONFIG_MGT5100)
- puts ("Board: Motorola MGT5100 (IceCube)\n");
#endif
return 0;
}
* Note that CS_BOOT cannot be cleared when
* executing in flash.
*/
-#if defined(CONFIG_MGT5100)
- *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25); /* disable CS_BOOT */
- *(vu_long *)MPC5XXX_ADDECR |= (1 << 16); /* enable CS0 */
-#endif
*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
}
{
if (size == 0x800000) { /* adjust mapping */
*(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
- START_REG(CFG_BOOTCS_START | size);
+ START_REG(CONFIG_SYS_BOOTCS_START | size);
*(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
- STOP_REG(CFG_BOOTCS_START | size, size);
+ STOP_REG(CONFIG_SYS_BOOTCS_START | size, size);
}
}
pci_mpc5xxx_init(&hose);
}
#endif
+
+#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
+
+void init_ide_reset (void)
+{
+ debug ("init_ide_reset\n");
+
+ /* Configure PSC1_4 as GPIO output for ATA reset */
+ *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
+ *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
+ /* Deassert reset */
+ *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
+}
+
+void ide_set_reset (int idereset)
+{
+ debug ("ide_reset(%d)\n", idereset);
+
+ if (idereset) {
+ *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
+ /* Make a delay. MPC5200 spec says 25 usec min */
+ udelay(500000);
+ } else {
+ *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
+ }
+}
+#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
+
+int board_eth_init(bd_t *bis)
+{
+ cpu_eth_init(bis); /* Built in FEC comes first */
+ return pci_eth_init(bis);
+}
projects / platform / kernel / u-boot.git / blobdiff