mirror of https://github.com/xemu-project/xemu.git
a14f9b8292
On all Exynos-based boards, the system powers down itself by driving
PS_HOLD signal low - eight bit in PS_HOLD_CONTROL register of PMU.
Handle writing to respective PMU register to fix power off failure:
reboot: Power down
Unable to poweroff system
shutdown: 31 output lines suppressed due to ratelimiting
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
CPU: 0 PID: 1 Comm: shutdown Not tainted 4.11.0-rc8 #846
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[<c031050c>] (unwind_backtrace) from [<c030ba6c>] (show_stack+0x10/0x14)
[<c030ba6c>] (show_stack) from [<c05b2800>] (dump_stack+0x88/0x9c)
[<c05b2800>] (dump_stack) from [<c03d3140>] (panic+0xdc/0x268)
[<c03d3140>] (panic) from [<c0343614>] (do_exit+0xa90/0xab4)
[<c0343614>] (do_exit) from [<c035f2dc>] (SyS_reboot+0x164/0x1d0)
[<c035f2dc>] (SyS_reboot) from [<c0307c80>] (ret_fast_syscall+0x0/0x3c)
Additionally the initial value of PS_HOLD has to be changed because
recent Linux kernel (v4.12-rc1) uses regmap cache for this access.
When the register is kept at reset value, the kernel will not issue a
write to it. Usually the bootloader sets the eight bit of PS_HOLD high
so mimic its existence here.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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| .. | ||
| macio | ||
| Makefile.objs | ||
| a9scu.c | ||
| applesmc.c | ||
| arm11scu.c | ||
| arm_integrator_debug.c | ||
| arm_l2x0.c | ||
| arm_sysctl.c | ||
| aspeed_scu.c | ||
| aspeed_sdmc.c | ||
| auxbus.c | ||
| bcm2835_mbox.c | ||
| bcm2835_property.c | ||
| bcm2835_rng.c | ||
| cbus.c | ||
| debugexit.c | ||
| eccmemctl.c | ||
| edu.c | ||
| exynos4210_clk.c | ||
| exynos4210_pmu.c | ||
| hyperv_testdev.c | ||
| imx6_ccm.c | ||
| imx6_src.c | ||
| imx25_ccm.c | ||
| imx31_ccm.c | ||
| imx_ccm.c | ||
| ivshmem.c | ||
| max111x.c | ||
| milkymist-hpdmc.c | ||
| milkymist-pfpu.c | ||
| mips_cmgcr.c | ||
| mips_cpc.c | ||
| mips_itu.c | ||
| mst_fpga.c | ||
| omap_clk.c | ||
| omap_gpmc.c | ||
| omap_l4.c | ||
| omap_sdrc.c | ||
| omap_tap.c | ||
| pc-testdev.c | ||
| pci-testdev.c | ||
| puv3_pm.c | ||
| pvpanic.c | ||
| sga.c | ||
| slavio_misc.c | ||
| stm32f2xx_syscfg.c | ||
| tmp105.c | ||
| tmp105.h | ||
| trace-events | ||
| unimp.c | ||
| vmport.c | ||
| zynq-xadc.c | ||
| zynq_slcr.c | ||