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/*
* (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
*/
/*
* pf5200.c - main board support/init for the esd pf5200.
*/
#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
#include <command.h>
#include "mt46v16m16-75.h"
void init_power_switch(void);
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");
/* 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");
/* 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");
}
/*
* 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 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");
/* set tap delay */
*(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
__asm__ volatile ("sync");
/* find RAM size using SDRAM CS0 only */
sdram_start(0);
test1 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
sdram_start(1);
test2 = get_ram_size(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;
/* let SDRAM CS1 start right after CS0 */
*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
} else {
#if 0
*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
/* let SDRAM CS1 start right after CS0 */
*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e; /* 2G */
#else
*(vu_long *) MPC5XXX_SDRAM_CS0CFG =
0x13 + __builtin_ffs(0x08000000 >> 20) - 1;
/* let SDRAM CS1 start right after CS0 */
*(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e; /* 2G */
#endif
}
#if 0
/* find RAM size using SDRAM CS1 only */
sdram_start(0);
get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
sdram_start(1);
get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
sdram_start(0);
#endif
/* set SDRAM CS1 size according to the amount of RAM found */
*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
init_power_switch();
return (dramsize);
}
int checkboard(void)
{
puts("Board: esd CPX CPU5200 (mecp5200)\n");
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.
*/
*(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
}
void flash_afterinit(ulong size)
{
if (size == CFG_FLASH_SIZE) {
/* 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);
}
}
#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)
#define GPIO_PSC1_4 0x01000000UL
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;
}
void ide_set_reset(int idereset)
{
debug("ide_reset(%d)\n", idereset);
if (idereset)
*(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
else
*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
}
#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
#define MPC5XXX_SIMPLEIO_GPIO_ENABLE (MPC5XXX_GPIO + 0x0004)
#define MPC5XXX_SIMPLEIO_GPIO_DIR (MPC5XXX_GPIO + 0x000C)
#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x0010)
#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT (MPC5XXX_GPIO + 0x0014)
#define MPC5XXX_INTERRUPT_GPIO_ENABLE (MPC5XXX_GPIO + 0x0020)
#define MPC5XXX_INTERRUPT_GPIO_DIR (MPC5XXX_GPIO + 0x0028)
#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)
#define MPC5XXX_INTERRUPT_GPIO_STATUS (MPC5XXX_GPIO + 0x003C)
#define GPIO_WU6 0x40000000UL
#define GPIO_USB0 0x00010000UL
#define GPIO_USB9 0x08000000UL
#define GPIO_USB9S 0x00080000UL
void init_power_switch(void)
{
debug("init_power_switch\n");
/* Configure GPIO_WU6 as GPIO output for ATA reset */
*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;
*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;
__asm__ volatile ("sync");
*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;
*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;
*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;
__asm__ volatile ("sync");
*(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
*(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;
__asm__ volatile ("sync");
if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {
*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;
__asm__ volatile ("sync");
}
}
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