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/*
* (C) Copyright 2003-2006
* 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>
/* Two MT48LC8M32B2 for 32 MB */
/* #include "mt48lc8m32b2-6-7.h" */
/* One MT48LC16M32S2 for 64 MB */
/* #include "mt48lc16m32s2-75.h" */
#if defined (CONFIG_MCC200_SDRAM)
#include "mt48lc16m16a2-75.h"
#else
#include "mt46v16m16-75.h"
#endif
DECLARE_GLOBAL_DATA_PTR;
extern flash_info_t flash_info[]; /* FLASH chips info */
ulong flash_get_size (ulong base, int banknum);
#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 = 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");
udelay(10);
}
#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.
*/
long int initdram (int board_type)
{
ulong dramsize = 0;
ulong dramsize2 = 0;
uint svr, pvr;
#ifndef CFG_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 *)CFG_SDRAM_BASE, 0x80000000);
sdram_start(1);
test2 = get_ram_size((long *)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 */
if (!dramsize)
sdram_start(0);
test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
if (!dramsize) {
sdram_start(1);
test2 = get_ram_size((long *)(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 */
/*
* 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");
}
return dramsize + dramsize2;
}
int checkboard (void)
{
#if defined(CONFIG_PRS200)
puts ("Board: PRS200\n");
#else
puts ("Board: MCC200\n");
#endif
return 0;
}
int misc_init_r (void)
{
ulong flash_sup_end, snum;
/*
* Adjust flash start and offset to detected values
*/
gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
gd->bd->bi_flashoffset = 0;
/*
* Check if boot FLASH isn't max size
*/
if (gd->bd->bi_flashsize < (0 - CFG_FLASH_BASE)) {
/* adjust mapping */
*(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
START_REG(gd->bd->bi_flashstart);
*(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize);
/*
* Re-check to get correct base address
*/
flash_get_size(gd->bd->bi_flashstart, CFG_MAX_FLASH_BANKS - 1);
/*
* Re-do flash protection upon new addresses
*/
flash_protect (FLAG_PROTECT_CLEAR,
gd->bd->bi_flashstart, 0xffffffff,
&flash_info[CFG_MAX_FLASH_BANKS - 1]);
/* Monitor protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
&flash_info[CFG_MAX_FLASH_BANKS - 1]);
/* Environment protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CFG_ENV_ADDR,
CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
&flash_info[CFG_MAX_FLASH_BANKS - 1]);
/* Redundant environment protection ON by default */
flash_protect (FLAG_PROTECT_SET,
CFG_ENV_ADDR_REDUND,
CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
&flash_info[CFG_MAX_FLASH_BANKS - 1]);
}
if (gd->bd->bi_flashsize > (32 << 20)) {
/* Unprotect the upper bank of the Flash */
*(volatile int*)MPC5XXX_CS0_CFG |= (1 << 6);
flash_protect (FLAG_PROTECT_CLEAR,
flash_info[0].start[0] + flash_info[0].size / 2,
(flash_info[0].start[0] - 1) + flash_info[0].size,
&flash_info[0]);
*(volatile int*)MPC5XXX_CS0_CFG &= ~(1 << 6);
printf ("Warning: Only 32 of 64 MB of Flash are accessible from U-Boot\n");
flash_info[0].size = 32 << 20;
for (snum = 0, flash_sup_end = gd->bd->bi_flashstart + (32<<20);
flash_info[0].start[snum] < flash_sup_end;
snum++);
flash_info[0].sector_count = snum;
}
return (0);
}
#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 (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
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