/* * (C) Copyright 2003-2007 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2004 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com. * * (C) Copyright 2004-2005 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de * * Adapted to U-Boot 1.2 by: * Bartlomiej Sieka <tur@semihalf.com>: * - HW ID readout from EEPROM * - module detection * Grzegorz Bernacki <gjb@semihalf.com>: * - run-time SDRAM controller configuration * - LIBFDT support * * 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 <asm/processor.h> #include <i2c.h> #include <linux/ctype.h> #ifdef CONFIG_OF_LIBFDT #include <libfdt.h> #include <libfdt_env.h> #include <fdt_support.h> #endif /* CONFIG_OF_LIBFDT */ #include "cm5200.h" #include "fwupdate.h" DECLARE_GLOBAL_DATA_PTR; static hw_id_t hw_id; #ifndef CONFIG_SYS_RAMBOOT /* * Helper function to initialize SDRAM controller. */ static void sdram_start(int hi_addr, mem_conf_t *mem_conf) { long hi_addr_bit = hi_addr ? 0x01000000 : 0; /* unlock mode register */ *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000000 | hi_addr_bit; /* precharge all banks */ *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000002 | hi_addr_bit; /* auto refresh */ *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000004 | hi_addr_bit; /* auto refresh, second time */ *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000004 | hi_addr_bit; /* set mode register */ *(vu_long *)MPC5XXX_SDRAM_MODE = mem_conf->mode; /* normal operation */ *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | hi_addr_bit; } #endif /* CONFIG_SYS_RAMBOOT */ /* * Retrieve memory configuration for a given module. board_type is the index * in hw_id_list[] corresponding to the module we are executing on; we return * SDRAM controller settings approprate for this module. */ static mem_conf_t* get_mem_config(int board_type) { switch(board_type){ case CM1_QA: return memory_config[0]; case CM11_QA: case CMU1_QA: return memory_config[1]; default: printf("ERROR: Unknown module, using a default SDRAM " "configuration - things may not work!!!.\n"); return memory_config[0]; } } /* * Initalize SDRAM - configure SDRAM controller, detect memory size. */ phys_size_t initdram(int board_type) { ulong dramsize = 0; #ifndef CONFIG_SYS_RAMBOOT ulong test1, test2; mem_conf_t *mem_conf; mem_conf = get_mem_config(board_type); /* configure SDRAM start/end for detection */ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */ /* setup config registers */ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = mem_conf->config1; *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = mem_conf->config2; sdram_start(0, mem_conf); test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); sdram_start(1, mem_conf); test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); if (test1 > test2) { sdram_start(0, mem_conf); 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 */ #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; #endif /* !CONFIG_SYS_RAMBOOT */ /* * On MPC5200B we need to set the special configuration delay in the * DDR controller. Refer to chapter 8.7.5 SDelay--MBAR + 0x0190 of * the MPC5200B User's Manual. */ *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04; __asm__ volatile ("sync"); return dramsize; } /* * Read module hardware identification data from the I2C EEPROM. */ static void read_hw_id(hw_id_t hw_id) { int i; for (i = 0; i < HW_ID_ELEM_COUNT; ++i) if (i2c_read(CONFIG_SYS_I2C_EEPROM, hw_id_format[i].offset, 2, (uchar *)&hw_id[i][0], hw_id_format[i].length) != 0) printf("ERROR: can't read HW ID from EEPROM\n"); } /* * Identify module we are running on, set gd->board_type to the index in * hw_id_list[] corresponding to the module identifed, or to * CM5200_UNKNOWN_MODULE if we can't identify the module. */ static void identify_module(hw_id_t hw_id) { int i, j, element; char match; gd->board_type = CM5200_UNKNOWN_MODULE; for (i = 0; i < sizeof (hw_id_list) / sizeof (char **); ++i) { match = 1; for (j = 0; j < sizeof (hw_id_identify) / sizeof (int); ++j) { element = hw_id_identify[j]; if (strncmp(hw_id_list[i][element], &hw_id[element][0], hw_id_format[element].length) != 0) { match = 0; break; } } if (match) { gd->board_type = i; break; } } } /* * Compose string with module name. * buf is assumed to have enough space, and be null-terminated. */ static void compose_module_name(hw_id_t hw_id, char *buf) { char tmp[MODULE_NAME_MAXLEN]; strncat(buf, &hw_id[PCB_NAME][0], hw_id_format[PCB_NAME].length); strncat(buf, ".", 1); strncat(buf, &hw_id[FORM][0], hw_id_format[FORM].length); strncat(buf, &hw_id[VERSION][0], hw_id_format[VERSION].length); strncat(buf, " (", 2); strncat(buf, &hw_id[IDENTIFICATION_NUMBER][0], hw_id_format[IDENTIFICATION_NUMBER].length); sprintf(tmp, " / %u.%u)", hw_id[MAJOR_SW_VERSION][0], hw_id[MINOR_SW_VERSION][0]); strcat(buf, tmp); } /* * Compose string with hostname. * buf is assumed to have enough space, and be null-terminated. */ static void compose_hostname(hw_id_t hw_id, char *buf) { char *p; strncat(buf, &hw_id[PCB_NAME][0], hw_id_format[PCB_NAME].length); strncat(buf, "_", 1); strncat(buf, &hw_id[FORM][0], hw_id_format[FORM].length); strncat(buf, &hw_id[VERSION][0], hw_id_format[VERSION].length); for (p = buf; *p; ++p) *p = tolower(*p); } #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) /* * Update 'model' and 'memory' properties in the blob according to the module * that we are running on. */ static void ft_blob_update(void *blob, bd_t *bd) { int len, ret, nodeoffset = 0; char module_name[MODULE_NAME_MAXLEN] = {0}; compose_module_name(hw_id, module_name); len = strlen(module_name) + 1; ret = fdt_setprop(blob, nodeoffset, "model", module_name, len); if (ret < 0) printf("ft_blob_update(): cannot set /model property err:%s\n", fdt_strerror(ret)); } #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ /* * Read HW ID from I2C EEPROM and detect the modue we are running on. Note * that we need to use local variable for readout, because global data is not * writable yet (and we'll have to redo the readout later on). */ int checkboard(void) { hw_id_t hw_id_tmp; char module_name_tmp[MODULE_NAME_MAXLEN] = ""; /* * We need I2C to access HW ID data from EEPROM, so we call i2c_init() * here despite the fact that it will be called again later on. We * also use a little trick to silence I2C-related output. */ gd->flags |= GD_FLG_SILENT; i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); gd->flags &= ~GD_FLG_SILENT; read_hw_id(hw_id_tmp); identify_module(hw_id_tmp); /* this sets gd->board_type */ compose_module_name(hw_id_tmp, module_name_tmp); if (gd->board_type != CM5200_UNKNOWN_MODULE) printf("Board: %s\n", module_name_tmp); else printf("Board: unrecognized cm5200 module (%s)\n", module_name_tmp); return 0; } int board_early_init_r(void) { /* * Now, when we are in RAM, enable flash write access for detection * process. Note that CS_BOOT cannot be cleared when executing in * flash. */ *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */ /* Now that we can write to global data, read HW ID again. */ read_hw_id(hw_id); return 0; } #ifdef CONFIG_MISC_INIT_R int misc_init_r(void) { #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) uchar buf[6]; char str[18]; char hostname[MODULE_NAME_MAXLEN]; /* Read ethaddr from EEPROM */ if (i2c_read(CONFIG_SYS_I2C_EEPROM, CONFIG_MAC_OFFSET, 2, buf, 6) == 0) { sprintf(str, "%02X:%02X:%02X:%02X:%02X:%02X", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); /* Check if MAC addr is owned by Schindler */ if (strstr(str, "00:06:C3") != str) printf(LOG_PREFIX "Warning - Illegal MAC address (%s)" " in EEPROM.\n", str); else { printf(LOG_PREFIX "Using MAC (%s) from I2C EEPROM\n", str); setenv("ethaddr", str); } } else { printf(LOG_PREFIX "Warning - Unable to read MAC from I2C" " device at address %02X:%04X\n", CONFIG_SYS_I2C_EEPROM, CONFIG_MAC_OFFSET); } #endif /* defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) */ if (!getenv("ethaddr")) printf(LOG_PREFIX "MAC address not set, networking is not " "operational\n"); /* set the hostname appropriate to the module we're running on */ hostname[0] = 0x00; compose_hostname(hw_id, hostname); setenv("hostname", hostname); return 0; } #endif /* CONFIG_MISC_INIT_R */ #ifdef CONFIG_LAST_STAGE_INIT int last_stage_init(void) { #ifdef CONFIG_USB_STORAGE cm5200_fwupdate(); #endif /* CONFIG_USB_STORAGE */ return 0; } #endif /* CONFIG_LAST_STAGE_INIT */ #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) void ft_board_setup(void *blob, bd_t *bd) { ft_cpu_setup(blob, bd); ft_blob_update(blob, bd); } #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */