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