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Diffstat (limited to 'kernel/arch/arm/mach-bcm/board_bcm2835.c')
-rw-r--r--kernel/arch/arm/mach-bcm/board_bcm2835.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/kernel/arch/arm/mach-bcm/board_bcm2835.c b/kernel/arch/arm/mach-bcm/board_bcm2835.c
index 70f2f3925..0f7b9eac3 100644
--- a/kernel/arch/arm/mach-bcm/board_bcm2835.c
+++ b/kernel/arch/arm/mach-bcm/board_bcm2835.c
@@ -12,7 +12,6 @@
* GNU General Public License for more details.
*/
-#include <linux/delay.h>
#include <linux/init.h>
#include <linux/irqchip.h>
#include <linux/of_address.h>
@@ -22,97 +21,10 @@
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
-#define PM_RSTC 0x1c
-#define PM_RSTS 0x20
-#define PM_WDOG 0x24
-
-#define PM_PASSWORD 0x5a000000
-#define PM_RSTC_WRCFG_MASK 0x00000030
-#define PM_RSTC_WRCFG_FULL_RESET 0x00000020
-#define PM_RSTS_HADWRH_SET 0x00000040
-
-#define BCM2835_PERIPH_PHYS 0x20000000
-#define BCM2835_PERIPH_VIRT 0xf0000000
-#define BCM2835_PERIPH_SIZE SZ_16M
-
-static void __iomem *wdt_regs;
-
-/*
- * The machine restart method can be called from an atomic context so we won't
- * be able to ioremap the regs then.
- */
-static void bcm2835_setup_restart(void)
-{
- struct device_node *np = of_find_compatible_node(NULL, NULL,
- "brcm,bcm2835-pm-wdt");
- if (WARN(!np, "unable to setup watchdog restart"))
- return;
-
- wdt_regs = of_iomap(np, 0);
- WARN(!wdt_regs, "failed to remap watchdog regs");
-}
-
-static void bcm2835_restart(enum reboot_mode mode, const char *cmd)
-{
- u32 val;
-
- if (!wdt_regs)
- return;
-
- /* use a timeout of 10 ticks (~150us) */
- writel_relaxed(10 | PM_PASSWORD, wdt_regs + PM_WDOG);
- val = readl_relaxed(wdt_regs + PM_RSTC);
- val &= ~PM_RSTC_WRCFG_MASK;
- val |= PM_PASSWORD | PM_RSTC_WRCFG_FULL_RESET;
- writel_relaxed(val, wdt_regs + PM_RSTC);
-
- /* No sleeping, possibly atomic. */
- mdelay(1);
-}
-
-/*
- * We can't really power off, but if we do the normal reset scheme, and
- * indicate to bootcode.bin not to reboot, then most of the chip will be
- * powered off.
- */
-static void bcm2835_power_off(void)
-{
- u32 val;
-
- /*
- * We set the watchdog hard reset bit here to distinguish this reset
- * from the normal (full) reset. bootcode.bin will not reboot after a
- * hard reset.
- */
- val = readl_relaxed(wdt_regs + PM_RSTS);
- val &= ~PM_RSTC_WRCFG_MASK;
- val |= PM_PASSWORD | PM_RSTS_HADWRH_SET;
- writel_relaxed(val, wdt_regs + PM_RSTS);
-
- /* Continue with normal reset mechanism */
- bcm2835_restart(REBOOT_HARD, "");
-}
-
-static struct map_desc io_map __initdata = {
- .virtual = BCM2835_PERIPH_VIRT,
- .pfn = __phys_to_pfn(BCM2835_PERIPH_PHYS),
- .length = BCM2835_PERIPH_SIZE,
- .type = MT_DEVICE
-};
-
-static void __init bcm2835_map_io(void)
-{
- iotable_init(&io_map, 1);
-}
-
static void __init bcm2835_init(void)
{
int ret;
- bcm2835_setup_restart();
- if (wdt_regs)
- pm_power_off = bcm2835_power_off;
-
bcm2835_init_clocks();
ret = of_platform_populate(NULL, of_default_bus_match_table, NULL,
@@ -129,9 +41,6 @@ static const char * const bcm2835_compat[] = {
};
DT_MACHINE_START(BCM2835, "BCM2835")
- .map_io = bcm2835_map_io,
- .init_irq = irqchip_init,
.init_machine = bcm2835_init,
- .restart = bcm2835_restart,
.dt_compat = bcm2835_compat
MACHINE_END