/* * (C) Copyright 2007 DENX Software Engineering * * 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 #include #include #include #include /* Clocks in use */ #define SCCR1_CLOCKS_EN (CLOCK_SCCR1_CFG_EN | \ CLOCK_SCCR1_LPC_EN | \ CLOCK_SCCR1_PSC_EN(CONFIG_PSC_CONSOLE) | \ CLOCK_SCCR1_PSCFIFO_EN | \ CLOCK_SCCR1_DDR_EN | \ CLOCK_SCCR1_FEC_EN) #define SCCR2_CLOCKS_EN (CLOCK_SCCR2_MEM_EN | \ CLOCK_SCCR2_SPDIF_EN | \ CLOCK_SCCR2_I2C_EN) #define CSAW_START(start) ((start) & 0xFFFF0000) #define CSAW_STOP(start, size) (((start) + (size) - 1) >> 16) long int fixed_sdram(void); int board_early_init_f (void) { volatile immap_t *im = (immap_t *) CFG_IMMR; u32 lpcaw; /* * Initialize Local Window for the CPLD registers access (CS2 selects * the CPLD chip) */ im->sysconf.lpcs2aw = CSAW_START(CFG_CPLD_BASE) | CSAW_STOP(CFG_CPLD_BASE, CFG_CPLD_SIZE); im->lpc.cs_cfg[2] = CFG_CS2_CFG; /* * According to MPC5121e RM, configuring local access windows should * be followed by a dummy read of the config register that was * modified last and an isync */ lpcaw = im->sysconf.lpcs2aw; __asm__ __volatile__ ("isync"); /* * Disable Boot NOR FLASH write protect - CPLD Reg 8 NOR FLASH Control * * Without this the flash identification routine fails, as it needs to issue * write commands in order to establish the device ID. */ *((volatile u8 *)(CFG_CPLD_BASE + 0x08)) = 0xC1; /* * Enable clocks */ im->clk.sccr[0] = SCCR1_CLOCKS_EN; im->clk.sccr[1] = SCCR2_CLOCKS_EN; return 0; } long int initdram (int board_type) { u32 msize = 0; msize = fixed_sdram (); return msize; } /* * fixed sdram init -- the board doesn't use memory modules that have serial presence * detect or similar mechanism for discovery of the DRAM settings */ long int fixed_sdram (void) { volatile immap_t *im = (immap_t *) CFG_IMMR; u32 msize = CFG_DDR_SIZE * 1024 * 1024; u32 msize_log2 = __ilog2 (msize); u32 i; /* Initialize IO Control */ im->io_ctrl.regs[MEM_IDX] = IOCTRL_MUX_DDR; /* Initialize DDR Local Window */ im->sysconf.ddrlaw.bar = CFG_DDR_BASE & 0xFFFFF000; im->sysconf.ddrlaw.ar = msize_log2 - 1; /* * According to MPC5121e RM, configuring local access windows should * be followed by a dummy read of the config register that was * modified last and an isync */ i = im->sysconf.ddrlaw.ar; __asm__ __volatile__ ("isync"); /* Enable DDR */ im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG_EN; /* Initialize DDR Priority Manager */ im->mddrc.prioman_config1 = CFG_MDDRCGRP_PM_CFG1; im->mddrc.prioman_config2 = CFG_MDDRCGRP_PM_CFG2; im->mddrc.hiprio_config = CFG_MDDRCGRP_HIPRIO_CFG; im->mddrc.lut_table0_main_upper = CFG_MDDRCGRP_LUT0_MU; im->mddrc.lut_table1_main_upper = CFG_MDDRCGRP_LUT1_MU; im->mddrc.lut_table2_main_upper = CFG_MDDRCGRP_LUT2_MU; im->mddrc.lut_table3_main_upper = CFG_MDDRCGRP_LUT3_MU; im->mddrc.lut_table4_main_upper = CFG_MDDRCGRP_LUT4_MU; im->mddrc.lut_table0_main_lower = CFG_MDDRCGRP_LUT0_ML; im->mddrc.lut_table1_main_lower = CFG_MDDRCGRP_LUT1_ML; im->mddrc.lut_table2_main_lower = CFG_MDDRCGRP_LUT2_ML; im->mddrc.lut_table3_main_lower = CFG_MDDRCGRP_LUT3_ML; im->mddrc.lut_table4_main_lower = CFG_MDDRCGRP_LUT4_ML; im->mddrc.lut_table0_alternate_upper = CFG_MDDRCGRP_LUT0_AU; im->mddrc.lut_table1_alternate_upper = CFG_MDDRCGRP_LUT1_AU; im->mddrc.lut_table2_alternate_upper = CFG_MDDRCGRP_LUT2_AU; im->mddrc.lut_table3_alternate_upper = CFG_MDDRCGRP_LUT3_AU; im->mddrc.lut_table4_alternate_upper = CFG_MDDRCGRP_LUT4_AU; im->mddrc.lut_table0_alternate_lower = CFG_MDDRCGRP_LUT0_AU; im->mddrc.lut_table1_alternate_lower = CFG_MDDRCGRP_LUT1_AL; im->mddrc.lut_table2_alternate_lower = CFG_MDDRCGRP_LUT2_AL; im->mddrc.lut_table3_alternate_lower = CFG_MDDRCGRP_LUT3_AL; im->mddrc.lut_table4_alternate_lower = CFG_MDDRCGRP_LUT4_AL; /* Initialize MDDRC */ im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG; im->mddrc.ddr_time_config0 = CFG_MDDRC_TIME_CFG0; im->mddrc.ddr_time_config1 = CFG_MDDRC_TIME_CFG1; im->mddrc.ddr_time_config2 = CFG_MDDRC_TIME_CFG2; /* Initialize DDR */ for (i = 0; i < 10; i++) im->mddrc.ddr_command = CFG_MICRON_NOP; im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL; im->mddrc.ddr_command = CFG_MICRON_EM2; im->mddrc.ddr_command = CFG_MICRON_EM3; im->mddrc.ddr_command = CFG_MICRON_EN_DLL; im->mddrc.ddr_command = CFG_MICRON_RST_DLL; im->mddrc.ddr_command = CFG_MICRON_PCHG_ALL; im->mddrc.ddr_command = CFG_MICRON_RFSH; im->mddrc.ddr_command = CFG_MICRON_INIT_DEV_OP; im->mddrc.ddr_command = CFG_MICRON_OCD_DEFAULT; im->mddrc.ddr_command = CFG_MICRON_OCD_EXIT; for (i = 0; i < 10; i++) im->mddrc.ddr_command = CFG_MICRON_NOP; /* Start MDDRC */ im->mddrc.ddr_time_config0 = CFG_MDDRC_TIME_CFG0_RUN; im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG_RUN; return msize; } int checkboard (void) { ushort brd_rev = *(vu_short *) (CFG_CPLD_BASE + 0x00); uchar cpld_rev = *(vu_char *) (CFG_CPLD_BASE + 0x02); volatile immap_t *im = (immap_t *) CFG_IMMR; volatile unsigned long *reg; int i; printf ("Board: ADS5121 rev. 0x%04x (CPLD rev. 0x%02x)\n", brd_rev, cpld_rev); /* change the slew rate on all pata pins to max */ reg = (unsigned long *) &(im->io_ctrl.regs[PATA_CE1_IDX]); for (i = 0; i < 9; i++) reg[i] |= 0x00000003; return 0; } #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) void ft_board_setup(void *blob, bd_t *bd) { ft_cpu_setup(blob, bd); fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize); } #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */