diff options
Diffstat (limited to 'board/total5200/sdram.c')
| -rw-r--r-- | board/total5200/sdram.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/board/total5200/sdram.c b/board/total5200/sdram.c deleted file mode 100644 index dbe3587..0000000 --- a/board/total5200/sdram.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * (C) Copyright 2003-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2004 - * Mark Jonas, Freescale Semiconductor, mark.jonas@freescale.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <mpc5xxx.h> - -#include "sdram.h" - -#ifndef CONFIG_SYS_RAMBOOT -static void mpc5xxx_sdram_start (sdram_conf_t *sdram_conf, int hi_addr) -{ - long hi_addr_bit = hi_addr ? 0x01000000 : 0; - - /* unlock mode register */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = sdram_conf->control | 0x80000000 | hi_addr_bit; - __asm__ volatile ("sync"); - - /* precharge all banks */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = sdram_conf->control | 0x80000002 | hi_addr_bit; - __asm__ volatile ("sync"); - - if (sdram_conf->ddr) { - /* set mode register: extended mode */ - *(vu_long *)MPC5XXX_SDRAM_MODE = sdram_conf->emode; - __asm__ volatile ("sync"); - - /* set mode register: reset DLL */ - *(vu_long *)MPC5XXX_SDRAM_MODE = sdram_conf->mode | 0x04000000; - __asm__ volatile ("sync"); - } - - /* precharge all banks */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = sdram_conf->control | 0x80000002 | hi_addr_bit; - __asm__ volatile ("sync"); - - /* auto refresh */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = sdram_conf->control | 0x80000004 | hi_addr_bit; - __asm__ volatile ("sync"); - - /* set mode register */ - *(vu_long *)MPC5XXX_SDRAM_MODE = sdram_conf->mode; - __asm__ volatile ("sync"); - - /* normal operation */ - *(vu_long *)MPC5XXX_SDRAM_CTRL = sdram_conf->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. - */ - -long int mpc5xxx_sdram_init (sdram_conf_t *sdram_conf) -{ - ulong dramsize = 0; - ulong dramsize2 = 0; -#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_conf->config1; - *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = sdram_conf->config2; - __asm__ volatile ("sync"); - - if (sdram_conf->ddr) { - /* set tap delay */ - *(vu_long *)MPC5XXX_CDM_PORCFG = sdram_conf->tapdelay; - __asm__ volatile ("sync"); - } - - /* find RAM size using SDRAM CS0 only */ - mpc5xxx_sdram_start(sdram_conf, 0); - test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); - mpc5xxx_sdram_start(sdram_conf, 1); - test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); - if (test1 > test2) { - mpc5xxx_sdram_start(sdram_conf, 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 */ - mpc5xxx_sdram_start(sdram_conf, 0); - test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000); - mpc5xxx_sdram_start(sdram_conf, 1); - test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000); - if (test1 > test2) { - mpc5xxx_sdram_start(sdram_conf, 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 */ - - return dramsize + dramsize2; -} |