diff options
Diffstat (limited to 'board/pm520/pm520.c')
-rw-r--r-- | board/pm520/pm520.c | 284 |
1 files changed, 205 insertions, 79 deletions
diff --git a/board/pm520/pm520.c b/board/pm520/pm520.c index bb0268f48b..54f59f59a7 100644 --- a/board/pm520/pm520.c +++ b/board/pm520/pm520.c @@ -2,6 +2,9 @@ * (C) Copyright 2003-2004 * 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. * @@ -25,127 +28,209 @@ #include <mpc5xxx.h> #include <pci.h> -#ifndef CFG_RAMBOOT -static long int dram_size(long int *base, long int maxsize) -{ - volatile long int *addr; - ulong cnt, val; - ulong save[32]; /* to make test non-destructive */ - unsigned char i = 0; - - for (cnt = (maxsize / sizeof (long)) >> 1; cnt > 0; cnt >>= 1) { - addr = base + cnt; /* pointer arith! */ - - save[i++] = *addr; - *addr = ~cnt; - } - - /* write 0 to base address */ - addr = base; - save[i] = *addr; - *addr = 0; - - /* check at base address */ - if ((val = *addr) != 0) { - *addr = save[i]; - return (0); - } - - for (cnt = 1; cnt < maxsize / sizeof (long); cnt <<= 1) { - addr = base + cnt; /* pointer arith! */ - - val = *addr; - *addr = save[--i]; - - if (val != (~cnt)) { - return (cnt * sizeof (long)); - } - } - return (maxsize); -} +#if defined(CONFIG_MPC5200_DDR) +#include "mt46v16m16-75.h" +#else +#include "mt48lc16m16a2-75.h" +#endif +#ifndef CFG_RAMBOOT static void sdram_start (int hi_addr) { long hi_addr_bit = hi_addr ? 0x01000000 : 0; /* unlock mode register */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0000 | hi_addr_bit; + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit; + __asm__ volatile ("sync"); + /* precharge all banks */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0002 | hi_addr_bit; - /* set mode register */ -#if defined(CONFIG_MPC5200) - *(vu_long *)MPC5XXX_SDRAM_MODE = 0x408d0000; -#elif defined(CONFIG_MGT5100) - *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000; + *(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 = 0xd04f0002 | hi_addr_bit; + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit; + __asm__ volatile ("sync"); + /* auto refresh */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0004 | hi_addr_bit; + *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit; + __asm__ volatile ("sync"); + /* set mode register */ - *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000; + *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE; + __asm__ volatile ("sync"); + /* normal operation */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x504f0000 | hi_addr_bit; + *(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 CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE + * is something else than 0x00000000. + */ + +#if defined(CONFIG_MPC5200) long int initdram (int board_type) { ulong dramsize = 0; + ulong dramsize2 = 0; #ifndef CFG_RAMBOOT ulong test1, test2; - /* configure SDRAM start/end */ -#if defined(CONFIG_MPC5200) + /* 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 = 0xc2233a00; - *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004; + *(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((ulong *)CFG_SDRAM_BASE, 0x80000000); + sdram_start(1); + test2 = get_ram_size((ulong *)CFG_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 */ + sdram_start(0); + test1 = get_ram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000); + sdram_start(1); + test2 = get_ram_size((ulong *)(CFG_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 /* CFG_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 /* CFG_RAMBOOT */ + + return dramsize + dramsize2; +} #elif defined(CONFIG_MGT5100) + +long int initdram (int board_type) +{ + ulong dramsize = 0; +#ifndef CFG_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 = 0xc2222600; - *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004; + *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1; + *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; /* address select register */ - *(vu_long *)MPC5XXX_SDRAM_XLBSEL = 0x03000000; -#endif + *(vu_long *)MPC5XXX_SDRAM_XLBSEL = SDRAM_ADDRSEL; + __asm__ volatile ("sync"); + + /* find RAM size */ sdram_start(0); - test1 = dram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); + test1 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); sdram_start(1); - test2 = dram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); + test2 = get_ram_size((ulong *)CFG_SDRAM_BASE, 0x80000000); if (test1 > test2) { sdram_start(0); dramsize = test1; } else { dramsize = test2; } -#if defined(CONFIG_MPC5200) - *(vu_long *)MPC5XXX_SDRAM_CS0CFG = - (0x13 + __builtin_ffs(dramsize >> 20) - 1); - *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */ -#elif defined(CONFIG_MGT5100) + + /* set SDRAM end address according to size */ *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15); -#endif -#else -#ifdef CONFIG_MGT5100 - *(vu_long *)MPC5XXX_ADDECR |= (1 << 22); /* Enable SDRAM */ +#else /* CFG_RAMBOOT */ + + /* Retrieve amount of SDRAM available */ dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15); -#else - dramsize = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS0CFG - 0x13)) << 20); -#endif + #endif /* CFG_RAMBOOT */ - /* return total ram size */ + return dramsize; } +#else +#error Neither CONFIG_MPC5200 or CONFIG_MGT5100 defined +#endif + int checkboard (void) { #if defined(CONFIG_MPC5200) @@ -171,14 +256,32 @@ void flash_preinit(void) *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */ } -void flash_afterinit(ulong size) +void flash_afterinit(ulong start, ulong size) { - if (size == 0x800000) { /* adjust mapping */ - *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START = - START_REG(CFG_BOOTCS_START | size); - *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP = - STOP_REG(CFG_BOOTCS_START | size, size); - } +#if defined(CONFIG_BOOT_ROM) + /* adjust mapping */ + *(vu_long *)MPC5XXX_CS1_START = + START_REG(start); + *(vu_long *)MPC5XXX_CS1_STOP = + STOP_REG(start, size); +#else + /* adjust mapping */ + *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START = + START_REG(start); + *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP = + STOP_REG(start, size); +#endif +} + + +extern flash_info_t flash_info[]; /* info for FLASH chips */ + +int misc_init_r (void) +{ + DECLARE_GLOBAL_DATA_PTR; + /* adjust flash start */ + gd->bd->bi_flashstart = flash_info[0].start[0]; + return (0); } #ifdef CONFIG_PCI @@ -191,3 +294,26 @@ void pci_init_board(void) pci_mpc5xxx_init(&hose); } #endif + +#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) + +void init_ide_reset (void) +{ + debug ("init_ide_reset\n"); + +} + +void ide_set_reset (int idereset) +{ + debug ("ide_reset(%d)\n", idereset); + +} +#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */ + +#if (CONFIG_COMMANDS & CFG_CMD_DOC) +extern void doc_probe (ulong physadr); +void doc_init (void) +{ + doc_probe (CFG_DOC_BASE); +} +#endif |