mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
330 lines
8.5 KiB
C
330 lines
8.5 KiB
C
/*
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* (C) Copyright 2003-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2004
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* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <mpc5xxx.h>
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#include <pci.h>
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#include <asm/processor.h>
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/* Two MT48LC8M32B2 for 32 MB */
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/* #include "mt48lc8m32b2-6-7.h" */
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/* One MT48LC16M32S2 for 64 MB */
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/* #include "mt48lc16m32s2-75.h" */
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#if defined (CONFIG_MCC200_SDRAM)
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#include "mt48lc16m16a2-75.h"
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#else
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#include "mt46v16m16-75.h"
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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extern flash_info_t flash_info[]; /* FLASH chips info */
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extern int do_auto_update(void);
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ulong flash_get_size (ulong base, int banknum);
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#ifndef CFG_RAMBOOT
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static void sdram_start (int hi_addr)
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{
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long hi_addr_bit = hi_addr ? 0x01000000 : 0;
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/* unlock mode register */
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*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
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__asm__ volatile ("sync");
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/* precharge all banks */
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*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
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__asm__ volatile ("sync");
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#if SDRAM_DDR
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/* set mode register: extended mode */
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*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
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__asm__ volatile ("sync");
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/* set mode register: reset DLL */
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*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
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__asm__ volatile ("sync");
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#endif
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/* precharge all banks */
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*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
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__asm__ volatile ("sync");
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/* auto refresh */
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*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
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__asm__ volatile ("sync");
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/* set mode register */
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*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
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__asm__ volatile ("sync");
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/* normal operation */
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*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
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__asm__ volatile ("sync");
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udelay(10);
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}
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#endif
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/*
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* ATTENTION: Although partially referenced initdram does NOT make real use
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* use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
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* is something else than 0x00000000.
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*/
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phys_size_t initdram (int board_type)
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{
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ulong dramsize = 0;
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ulong dramsize2 = 0;
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uint svr, pvr;
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#ifndef CFG_RAMBOOT
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ulong test1, test2;
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/* setup SDRAM chip selects */
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*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
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*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
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__asm__ volatile ("sync");
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/* setup config registers */
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*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
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*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
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__asm__ volatile ("sync");
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#if SDRAM_DDR
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/* set tap delay */
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*(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
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__asm__ volatile ("sync");
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#endif
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/* find RAM size using SDRAM CS0 only */
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sdram_start(0);
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test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
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sdram_start(1);
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test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
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if (test1 > test2) {
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sdram_start(0);
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dramsize = test1;
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} else {
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dramsize = test2;
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}
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/* memory smaller than 1MB is impossible */
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if (dramsize < (1 << 20)) {
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dramsize = 0;
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}
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/* set SDRAM CS0 size according to the amount of RAM found */
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if (dramsize > 0) {
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*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
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} else {
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*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
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}
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/* let SDRAM CS1 start right after CS0 */
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*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
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/* find RAM size using SDRAM CS1 only */
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if (!dramsize)
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sdram_start(0);
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test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
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if (!dramsize) {
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sdram_start(1);
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test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
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}
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if (test1 > test2) {
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sdram_start(0);
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dramsize2 = test1;
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} else {
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dramsize2 = test2;
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}
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/* memory smaller than 1MB is impossible */
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if (dramsize2 < (1 << 20)) {
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dramsize2 = 0;
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}
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/* set SDRAM CS1 size according to the amount of RAM found */
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if (dramsize2 > 0) {
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*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
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| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
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} else {
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*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
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}
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#else /* CFG_RAMBOOT */
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/* retrieve size of memory connected to SDRAM CS0 */
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dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
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if (dramsize >= 0x13) {
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dramsize = (1 << (dramsize - 0x13)) << 20;
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} else {
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dramsize = 0;
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}
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/* retrieve size of memory connected to SDRAM CS1 */
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dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
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if (dramsize2 >= 0x13) {
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dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
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} else {
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dramsize2 = 0;
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}
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#endif /* CFG_RAMBOOT */
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/*
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* On MPC5200B we need to set the special configuration delay in the
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* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
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* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
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*
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* "The SDelay should be written to a value of 0x00000004. It is
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* required to account for changes caused by normal wafer processing
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* parameters."
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*/
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svr = get_svr();
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pvr = get_pvr();
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if ((SVR_MJREV(svr) >= 2) && (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
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*(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
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__asm__ volatile ("sync");
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}
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return dramsize + dramsize2;
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}
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int checkboard (void)
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{
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#if defined(CONFIG_PRS200)
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puts ("Board: PRS200\n");
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#else
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puts ("Board: MCC200\n");
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#endif
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return 0;
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}
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int misc_init_r (void)
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{
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ulong flash_sup_end, snum;
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/*
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* Adjust flash start and offset to detected values
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*/
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gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
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gd->bd->bi_flashoffset = 0;
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/*
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* Check if boot FLASH isn't max size
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*/
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if (gd->bd->bi_flashsize < (0 - CFG_FLASH_BASE)) {
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/* adjust mapping */
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*(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
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START_REG(gd->bd->bi_flashstart);
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*(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
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STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize);
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/*
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* Re-check to get correct base address
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*/
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flash_get_size(gd->bd->bi_flashstart, CFG_MAX_FLASH_BANKS - 1);
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/*
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* Re-do flash protection upon new addresses
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*/
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flash_protect (FLAG_PROTECT_CLEAR,
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gd->bd->bi_flashstart, 0xffffffff,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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/* Monitor protection ON by default */
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flash_protect (FLAG_PROTECT_SET,
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CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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/* Environment protection ON by default */
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_ENV_ADDR,
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CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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/* Redundant environment protection ON by default */
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_ENV_ADDR_REDUND,
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CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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}
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if (gd->bd->bi_flashsize > (32 << 20)) {
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/* Unprotect the upper bank of the Flash */
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*(volatile int*)MPC5XXX_CS0_CFG |= (1 << 6);
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flash_protect (FLAG_PROTECT_CLEAR,
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flash_info[0].start[0] + flash_info[0].size / 2,
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(flash_info[0].start[0] - 1) + flash_info[0].size,
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&flash_info[0]);
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*(volatile int*)MPC5XXX_CS0_CFG &= ~(1 << 6);
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printf ("Warning: Only 32 of 64 MB of Flash are accessible from U-Boot\n");
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flash_info[0].size = 32 << 20;
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for (snum = 0, flash_sup_end = gd->bd->bi_flashstart + (32<<20);
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flash_info[0].start[snum] < flash_sup_end;
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snum++);
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flash_info[0].sector_count = snum;
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}
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#ifdef CONFIG_AUTO_UPDATE
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do_auto_update();
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#endif
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return (0);
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}
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#ifdef CONFIG_PCI
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static struct pci_controller hose;
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extern void pci_mpc5xxx_init(struct pci_controller *);
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void pci_init_board(void)
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{
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pci_mpc5xxx_init(&hose);
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}
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#endif
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#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
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void init_ide_reset (void)
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{
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debug ("init_ide_reset\n");
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}
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void ide_set_reset (int idereset)
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{
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debug ("ide_reset(%d)\n", idereset);
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}
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#endif
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#if defined(CONFIG_CMD_DOC)
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void doc_init (void)
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{
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doc_probe (CFG_DOC_BASE);
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}
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#endif
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