/* * (C) Copyright 2001-2003 * Wolfgang Denk, DENX Software Engineering, wd@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 <config.h> #include <mpc8xx.h> #include <i2c.h> #include <commproc.h> #include <command.h> #include <malloc.h> #include <linux/types.h> #include <linux/string.h> /* for strdup */ /* * Memory Controller Using * * CS0 - Flash memory (0x40000000) * CS1 - FLASH memory (0x????????) * CS2 - SDRAM (0x00000000) * CS3 - * CS4 - * CS5 - * CS6 - PCMCIA device * CS7 - PCMCIA device */ /* ------------------------------------------------------------------------- */ #define _not_used_ 0xffffffff const uint sdram_table[]= { /* single read. (offset 0 in upm RAM) */ 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00, 0x1ff77c47, /* MRS initialization (offset 5) */ 0x1ff77c34, 0xefeabc34, 0x1fb57c35, /* burst read. (offset 8 in upm RAM) */ 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00, 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, /* single write. (offset 18 in upm RAM) */ 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, _not_used_, _not_used_, _not_used_, _not_used_, /* burst write. (offset 20 in upm RAM) */ 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00, 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, /* refresh. (offset 30 in upm RAM) */ 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc84, 0xfffffc07, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, _not_used_, /* exception. (offset 3c in upm RAM) */ 0x7ffffc07, _not_used_, _not_used_, _not_used_ }; /* ------------------------------------------------------------------------- */ /* * Check Board Identity: */ int checkboard (void) { puts ("Board: R360 MPI Board\n"); return 0; } /* ------------------------------------------------------------------------- */ static long int dram_size (long int, long int *, long int); /* ------------------------------------------------------------------------- */ long int initdram (int board_type) { volatile immap_t *immap = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; long int size8, size9; long int size_b0 = 0; unsigned long reg; upmconfig (UPMA, (uint *) sdram_table, sizeof (sdram_table) / sizeof (uint)); /* * Preliminary prescaler for refresh (depends on number of * banks): This value is selected for four cycles every 62.4 us * with two SDRAM banks or four cycles every 31.2 us with one * bank. It will be adjusted after memory sizing. */ memctl->memc_mptpr = CFG_MPTPR_2BK_8K; memctl->memc_mar = 0x00000088; /* * Map controller bank 2 to the SDRAM bank at * preliminary address - these have to be modified after the * SDRAM size has been determined. */ memctl->memc_or2 = CFG_OR2_PRELIM; memctl->memc_br2 = CFG_BR2_PRELIM; memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ udelay (200); /* perform SDRAM initializsation sequence */ memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */ udelay (200); memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */ udelay (200); memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ udelay (1000); /* * Check Bank 2 Memory Size for re-configuration * * try 8 column mode */ size8 = dram_size (CFG_MAMR_8COL, (ulong *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE); udelay (1000); /* * try 9 column mode */ size9 = dram_size (CFG_MAMR_9COL, (ulong *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE); if (size8 < size9) { /* leave configuration at 9 columns */ size_b0 = size9; /* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */ } else { /* back to 8 columns */ size_b0 = size8; memctl->memc_mamr = CFG_MAMR_8COL; udelay (500); /* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */ } udelay (1000); /* * Adjust refresh rate depending on SDRAM type, both banks * For types > 128 MBit leave it at the current (fast) rate */ if ((size_b0 < 0x02000000)) { /* reduce to 15.6 us (62.4 us / quad) */ memctl->memc_mptpr = CFG_MPTPR_2BK_4K; udelay (1000); } /* * Final mapping */ memctl->memc_or1 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM; memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; /* adjust refresh rate depending on SDRAM type, one bank */ reg = memctl->memc_mptpr; reg >>= 1; /* reduce to CFG_MPTPR_1BK_8K / _4K */ memctl->memc_mptpr = reg; udelay (10000); #ifdef CONFIG_CAN_DRIVER /* Initialize OR3 / BR3 */ memctl->memc_or3 = CFG_OR3_CAN; /* switch GPLB_5 to GPLA_5 */ memctl->memc_br3 = CFG_BR3_CAN; /* Initialize MBMR */ memctl->memc_mbmr = MBMR_GPL_B4DIS; /* GPL_B4 works as UPWAITB */ /* Initialize UPMB for CAN: single read */ memctl->memc_mdr = 0xFFFFC004; memctl->memc_mcr = 0x0100 | UPMB; memctl->memc_mdr = 0x0FFFD004; memctl->memc_mcr = 0x0101 | UPMB; memctl->memc_mdr = 0x0FFFC000; memctl->memc_mcr = 0x0102 | UPMB; memctl->memc_mdr = 0x3FFFC004; memctl->memc_mcr = 0x0103 | UPMB; memctl->memc_mdr = 0xFFFFDC05; memctl->memc_mcr = 0x0104 | UPMB; /* Initialize UPMB for CAN: single write */ memctl->memc_mdr = 0xFFFCC004; memctl->memc_mcr = 0x0118 | UPMB; memctl->memc_mdr = 0xCFFCD004; memctl->memc_mcr = 0x0119 | UPMB; memctl->memc_mdr = 0x0FFCC000; memctl->memc_mcr = 0x011A | UPMB; memctl->memc_mdr = 0x7FFCC004; memctl->memc_mcr = 0x011B | UPMB; memctl->memc_mdr = 0xFFFDCC05; memctl->memc_mcr = 0x011C | UPMB; #endif return (size_b0); } /* ------------------------------------------------------------------------- */ /* * Check memory range for valid RAM. A simple memory test determines * the actually available RAM size between addresses `base' and * `base + maxsize'. Some (not all) hardware errors are detected: * - short between address lines * - short between data lines */ static long int dram_size (long int mamr_value, long int *base, long int maxsize) { volatile immap_t *immap = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; memctl->memc_mamr = mamr_value; return (get_ram_size(base, maxsize)); } /* ------------------------------------------------------------------------- */ void r360_i2c_lcd_write (uchar data0, uchar data1) { if (i2c_write (CFG_I2C_LCD_ADDR, data0, 1, &data1, 1)) { printf("Can't write lcd data 0x%02X 0x%02X.\n", data0, data1); } } /* ------------------------------------------------------------------------- */ /*----------------------------------------------------------------------- * Keyboard Controller */ /* Number of bytes returned from Keyboard Controller */ #define KEYBD_KEY_MAX 16 /* maximum key number */ #define KEYBD_DATALEN ((KEYBD_KEY_MAX + 7) / 8) /* normal key scan data */ static uchar *key_match (uchar *); int misc_init_r (void) { uchar kbd_data[KEYBD_DATALEN]; uchar keybd_env[2 * KEYBD_DATALEN + 1]; uchar *str; int i; i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); i2c_read (CFG_I2C_KEY_ADDR, 0, 0, kbd_data, KEYBD_DATALEN); for (i = 0; i < KEYBD_DATALEN; ++i) { sprintf (keybd_env + i + i, "%02X", kbd_data[i]); } setenv ("keybd", keybd_env); str = strdup (key_match (keybd_env)); /* decode keys */ #ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */ setenv ("preboot", str); /* set or delete definition */ #endif /* CONFIG_PREBOOT */ if (str != NULL) { free (str); } return (0); } /*----------------------------------------------------------------------- * Check if pressed key(s) match magic sequence, * and return the command string associated with that key(s). * * If no key press was decoded, NULL is returned. * * Note: the first character of the argument will be overwritten with * the "magic charcter code" of the decoded key(s), or '\0'. * * * Note: the string points to static environment data and must be * saved before you call any function that modifies the environment. */ #ifdef CONFIG_PREBOOT static uchar kbd_magic_prefix[] = "key_magic"; static uchar kbd_command_prefix[] = "key_cmd"; static uchar *key_match (uchar * kbd_str) { uchar magic[sizeof (kbd_magic_prefix) + 1]; uchar cmd_name[sizeof (kbd_command_prefix) + 1]; uchar *str, *suffix; uchar *kbd_magic_keys; char *cmd; /* * The following string defines the characters that can pe 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) { /* 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 0 printf ("### Check magic \"%s\"\n", magic); #endif if ((str = getenv (magic)) != 0) { #if 0 printf ("### Compare \"%s\" \"%s\"\n", kbd_str, str); #endif if (strcmp (kbd_str, str) == 0) { sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix); if ((cmd = getenv (cmd_name)) != 0) { #if 0 printf ("### Set PREBOOT to $(%s): \"%s\"\n", cmd_name, cmd); #endif return (cmd); } } } } } #if 0 printf ("### Delete PREBOOT\n"); #endif *kbd_str = '\0'; return (NULL); } #endif /* CONFIG_PREBOOT */ /* Read Keyboard status */ int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { uchar kbd_data[KEYBD_DATALEN]; uchar keybd_env[2 * KEYBD_DATALEN + 1]; int i; i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); /* Read keys */ i2c_read (CFG_I2C_KEY_ADDR, 0, 0, kbd_data, KEYBD_DATALEN); puts ("Keys:"); for (i = 0; i < KEYBD_DATALEN; ++i) { sprintf (keybd_env + i + i, "%02X", kbd_data[i]); printf (" %02x", kbd_data[i]); } putc ('\n'); setenv ("keybd", keybd_env); return 0; } U_BOOT_CMD( kbd, 1, 1, do_kbd, "kbd - read keyboard status\n", NULL );