minix/kernel/arch/earm/omap_reset.c
Kees Jongenburger aa94c9ed55 arm:switch to dynamic configuration for the kernel.
During startup machine.board_id is now determined. The kernel can now
at runtime determine how to configure itself and does so.

Change-Id: I4f615af9bfa5add219e618b911a51af127591d6a
2013-12-17 11:32:38 +01:00

61 lines
1.4 KiB
C

#include <assert.h>
#include <sys/types.h>
#include <machine/cpu.h>
#include <minix/type.h>
#include <minix/board.h>
#include <io.h>
#include "kernel/kernel.h"
#include "kernel/proc.h"
#include "kernel/vm.h"
#include "kernel/proto.h"
#include "arch_proto.h"
#include "omap_reset.h"
#define AM335X_CM_BASE 0x44E00000
#define AM335X_CM_SIZE 0x1000
#define AM335X_PRM_DEVICE_OFFSET 0xf00
#define AM335X_PRM_RSTCTRL_REG 0x00
#define AM335X_RST_GLOBAL_WARM_SW_BIT 0
#define DM37XX_CM_BASE 0x48307000
#define DM37XX_CM_SIZE 0x1000
#define DM37XX_PRM_RSTCTRL_REG 0x250
#define DM37XX_RST_DPLL3_BIT 2
struct omap_reset
{
vir_bytes base;
vir_bytes size;
};
static struct omap_reset omap_reset;
static kern_phys_map reset_phys_map;
void
omap3_reset_init(void)
{
if(BOARD_IS_BBXM(machine.board_id)){
omap_reset.base = DM37XX_CM_BASE;
omap_reset.size = DM37XX_CM_SIZE;
} else if(BOARD_IS_BB(machine.board_id)){
omap_reset.base = AM335X_CM_BASE;
omap_reset.size = AM335X_CM_SIZE;
}
kern_phys_map_ptr(omap_reset.base, omap_reset.size, &reset_phys_map,
(vir_bytes) &omap_reset.base);
}
void
omap3_reset(void)
{
if(BOARD_IS_BBXM(machine.board_id)){
mmio_set((omap_reset.base + DM37XX_PRM_RSTCTRL_REG), (1 << DM37XX_RST_DPLL3_BIT));
} else if(BOARD_IS_BB(machine.board_id)){
mmio_set((omap_reset.base + AM335X_PRM_DEVICE_OFFSET + AM335X_PRM_RSTCTRL_REG), (1 << AM335X_RST_GLOBAL_WARM_SW_BIT));
}
}