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Finish up support for MarelV38B board

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- add watchdog support
 - enable GPIO_WKUP_7 pin for input
 - code cleanup
This commit is contained in:
Bartlomiej Sieka 2006-11-01 02:04:38 +01:00
parent ffa150bc90
commit 25721b5cec
1 changed files with 56 additions and 48 deletions
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54
board/v38b/v38b.c
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@ -28,6 +28,7 @@
#include <mpc5xxx.h> #include <mpc5xxx.h>
#include <asm/processor.h> #include <asm/processor.h>
#ifndef CFG_RAMBOOT #ifndef CFG_RAMBOOT
static void sdram_start(int hi_addr) static void sdram_start(int hi_addr)
{ {
@ -194,18 +195,33 @@ int checkboard (void)
int board_early_init_r(void) int board_early_init_r(void)
{ {
/* /*
* Now, when we are in RAM, enable flash write access for detection process. * Now, when we are in RAM, enable flash write access for the
* Note that CS_BOOT cannot be cleared when executing in flash. * detection process. Note that CS_BOOT cannot be cleared when
* executing in flash.
*/ */
*(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */ *(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
#ifdef CONFIG_HW_WATCHDOG
/*
* Enable and configure the direction (output) of PSC3_9 - watchdog
* reset input. Refer to 7.3.2.2.[1,3,4] of the MPC5200B User's
* Manual.
*/
*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC3_9;
*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC3_9;
#endif /* CONFIG_HW_WATCHDOG */
/*
* Enable GPIO_WKUP_7 to "read the status of the actual power
* situation". Default direction is input, so no need to set it
* explicitly.
*/
*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WKUP_7;
return 0; return 0;
} }
#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) #if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)
#define GPIO_PSC1_4 0x01000000UL
void init_ide_reset(void) void init_ide_reset(void)
{ {
debug("init_ide_reset\n"); debug("init_ide_reset\n");
@ -214,7 +230,7 @@ void init_ide_reset(void)
*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4; *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4; *(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
/* Deassert reset */ /* Deassert reset */
*(vu_long *) MPC5XXX_WU_GPIO_DATA |= GPIO_PSC1_4; *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
} }
@ -223,30 +239,22 @@ void ide_set_reset(int idereset)
debug("ide_reset(%d)\n", idereset); debug("ide_reset(%d)\n", idereset);
if (idereset) { if (idereset) {
*(vu_long *) MPC5XXX_WU_GPIO_DATA &= ~GPIO_PSC1_4; *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
/* Make a delay. MPC5200 spec says 25 usec min */ /* Make a delay. MPC5200 spec says 25 usec min */
udelay(500000); udelay(500000);
} else } else
*(vu_long *) MPC5XXX_WU_GPIO_DATA |= GPIO_PSC1_4; *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
} }
#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */ #endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
void led_d4_on(void) #ifdef CONFIG_HW_WATCHDOG
{
/* TIMER7 as GPIO output low */
*(vu_long *) (MPC5XXX_GPT + 0x70) |= 0x24;
}
void led_d4_off(void)
{
/* TIMER7 as GPIO output high */
*(vu_long *) (MPC5XXX_GPT + 0x70) |= 0x34;
}
void hw_watchdog_reset(void) void hw_watchdog_reset(void)
{ {
/* TODO fill this in */ /*
* MarelV38B has a TPS3705 watchdog. Spec says that to kick the dog
* we need a positive or negative transition on WDI i.e., our PSC3_9.
*/
*(vu_long *) MPC5XXX_WU_GPIO_DATA_O ^= GPIO_PSC3_9;
} }
#endif /* CONFIG_HW_WATCHDOG */