/* * (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. * * 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 <libfdt.h> #include <netdev.h> #if defined(CONFIG_LITE5200B) #include "mt46v32m16.h" #else # if defined(CONFIG_MPC5200_DDR) # include "mt46v16m16-75.h" # else #include "mt48lc16m16a2-75.h" # endif #endif #ifdef CONFIG_LITE5200B_PM /* u-boot part of low-power mode implementation */ #define SAVED_ADDR (*(void **)0x00000000) #define PSC2_4 0x02 void lite5200b_wakeup(void) { unsigned char wakeup_pin; void (*linux_wakeup)(void); /* 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"); wakeup_pin = *(vu_char *)MPC5XXX_WU_GPIO_DATA_I; if (wakeup_pin & PSC2_4) return; /* 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); /* 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 */ /* 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; /* 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. */ #if defined(CONFIG_MPC5200) phys_size_t initdram (int board_type) { ulong dramsize = 0; ulong dramsize2 = 0; uint svr, pvr; #ifndef CONFIG_SYS_RAMBOOT ulong test1, test2; /* setup SDRAM chip selects */ *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* 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, 0x80000000); sdram_start(1); test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); 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 */ } /* let SDRAM CS1 start right after CS0 */ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */ /* 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; } /* memory smaller than 1MB is impossible */ if (dramsize2 < (1 << 20)) { dramsize2 = 0; } /* 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; } #elif defined(CONFIG_MGT5100) phys_size_t initdram (int board_type) { ulong dramsize = 0; #ifndef CONFIG_SYS_RAMBOOT ulong test1, test2; /* setup and enable SDRAM chip selects */ *(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 = SDRAM_CONFIG1; *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; /* address select register */ *(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL; __asm__ volatile ("sync"); /* find RAM size */ sdram_start(0); test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); sdram_start(1); test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); if (test1 > test2) { sdram_start(0); dramsize = test1; } else { dramsize = test2; } /* set SDRAM end address according to size */ *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15); #else /* CONFIG_SYS_RAMBOOT */ /* Retrieve amount of SDRAM available */ dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15); #endif /* CONFIG_SYS_RAMBOOT */ return dramsize; } #else #error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined #endif int checkboard (void) { #if defined (CONFIG_LITE5200B) puts ("Board: Freescale Lite5200B\n"); #elif defined(CONFIG_MPC5200) puts ("Board: Motorola MPC5200 (IceCube)\n"); #elif defined(CONFIG_MGT5100) puts ("Board: Motorola MGT5100 (IceCube)\n"); #endif return 0; } void flash_preinit(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. */ #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 */ } void flash_afterinit(ulong size) { if (size == 0x800000) { /* adjust mapping */ *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START = START_REG(CONFIG_SYS_BOOTCS_START | size); *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(CONFIG_SYS_BOOTCS_START | size, size); } } #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 #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); }