--- /dev/null
+/*
+ * (C) Copyright 2003-2008
+ * 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
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <malloc.h>
+
+#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;
+ uint svr, pvr;
+
+ /* 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 */
+
+ /*
+ * 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;
+}
+
+int checkboard (void)
+{
+ puts ("Board: HMI1001\n");
+ 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 = *((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;
+}
+
+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);
+ 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
Code Review / kvmfornfv.git / blobdiff