e54d075f6f
Remove the dependency from memory.c to omap_timer.h. Change-Id: I1f1a0e5436ac725e4b0db9d7d404194384794802
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#include <assert.h>
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#include <sys/types.h>
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#include <machine/cpu.h>
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#include <minix/type.h>
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#include <minix/board.h>
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#include <io.h>
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#include "kernel/kernel.h"
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#include "kernel/proc.h"
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#include "kernel/vm.h"
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#include "kernel/proto.h"
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#include "arch_proto.h"
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#include "bsp_reset.h"
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#include "omap_rtc.h"
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#define AM335X_CM_BASE 0x44E00000
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#define AM335X_CM_SIZE 0x1000
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#define AM335X_PRM_DEVICE_OFFSET 0xf00
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#define AM335X_PRM_RSTCTRL_REG 0x00
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#define AM335X_RST_GLOBAL_WARM_SW_BIT 0
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#define DM37XX_CM_BASE 0x48307000
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#define DM37XX_CM_SIZE 0x1000
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#define DM37XX_PRM_RSTCTRL_REG 0x250
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#define DM37XX_RST_DPLL3_BIT 2
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struct omap_reset
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{
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vir_bytes base;
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vir_bytes size;
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};
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static struct omap_reset omap_reset;
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static kern_phys_map reset_phys_map;
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void
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bsp_reset_init(void)
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{
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if (BOARD_IS_BBXM(machine.board_id)) {
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omap_reset.base = DM37XX_CM_BASE;
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omap_reset.size = DM37XX_CM_SIZE;
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} else if (BOARD_IS_BB(machine.board_id)) {
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omap_reset.base = AM335X_CM_BASE;
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omap_reset.size = AM335X_CM_SIZE;
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}
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kern_phys_map_ptr(omap_reset.base, omap_reset.size,
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VMMF_UNCACHED | VMMF_WRITE,
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&reset_phys_map, (vir_bytes) & omap_reset.base);
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}
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void
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bsp_reset(void)
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{
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if (BOARD_IS_BBXM(machine.board_id)) {
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mmio_set((omap_reset.base + DM37XX_PRM_RSTCTRL_REG),
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(1 << DM37XX_RST_DPLL3_BIT));
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} else if (BOARD_IS_BB(machine.board_id)) {
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mmio_set((omap_reset.base + AM335X_PRM_DEVICE_OFFSET +
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AM335X_PRM_RSTCTRL_REG),
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(1 << AM335X_RST_GLOBAL_WARM_SW_BIT));
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}
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}
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void
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bsp_poweroff(void)
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{
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/*
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* The am335x can signal an external power management chip to cut the power
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* by toggling the PMIC_POWER_EN pin. It might fail if there isn't an
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* external PMIC or if the PMIC hasn't been configured to respond to toggles.
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* The only way to pull the pin low is via ALARM2 (see TRM 20.3.3.8).
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* At this point PM should have already signaled readclock to set the alarm.
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*/
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if (BOARD_IS_BB(machine.board_id)) {
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/* rtc was frozen to prevent premature power-off, unfreeze it
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* now */
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omap3_rtc_run();
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/* wait for the alarm to go off and PMIC to disable power to
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* SoC */
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while (1);
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}
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}
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