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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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fe388fac0f
- add new SoCs support : exynos3250, 5260, 5410 and 5800 - enable multi-platform on exynos : consolidate exynos related Kconfig entries Note that this requires tags/samsung-cleanup and tags/samsung-clk-2 because of mostly migration exynos specific macros into mach-exynos and exynos related Kconfig entries. One more merge conflict happens in arch/arm/Kconfig for ARCH_EXYNOS due to SRAM stuff, even though tried to sort them out. Since just resolving it would be better I think, please remove ARCH_EXYNOS in arch/arm/Kconfig when merge conflict happens. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJTiNnJAAoJEA0Cl+kVi2xqw4AP/1h2Rtg5/VXTwspQNicVqmjy xh1R5HNkCK9J+Vs+hrajFog4lneTuKDimgJqwM4JcMR9Y6KFCVivMZ+rPpaVpa2o Ly50EgEUAx7iir/PswttUVsSAoP/LXwwP44tWgV6qwV4N2qZ4BPKSAkc+l4icrqv Zzx4h1sxMKF2oTarDsrBIj7UszZtIB6Dt00ogyEJ2BNgWcWzU51YtWOz6MdC+Eha Wz2cfnrl2GiSIUC+Y0jRxeNfJyIgVMvrWpC23d5QSO0qx5xDNhSq/+eNXpd4gTGc aMoBnTgzvymOgLYFkcDCDYxsehXqX1b3hHzu1BfRTWjcA9wmxFhC8eOiMAgDso79 V8L/k5/XVAP34TFzZR1ZD5rCqgBIuDgmeOqyzMAxMLVKTQZrJ/6smKq94FCCD89G lOtiLmAPems8g7DE2wpWsYiml7TyUHNqgHP4FWJThnERjBa+rDKsyozzgFLJLqD7 /qL+qn6C0COtfDN0SBiIiLyV/0j+DI+tS5uGWgKWxGkRLQev1GyWGsGJZBx1tlJB v0/aAEAFkTWg9b+dO9OdUXzbGvc3VAQbaiwfCb73vsEibuO3IGpsXsl0d+ChXUkK XbQW5nNHOCKJj1auAg+4AqWm+evSzjZa/gViUlxE0vpK1Bc8uXZy0sYhQwC0lBaB KBqHE3ImvgIgPhXa3t5R =/Vpg -----END PGP SIGNATURE----- Merge tag 'samsung-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc Samsung Exynos updates for 3.16 - add new SoCs support : exynos3250, 5260, 5410 and 5800 - enable multi-platform on exynos : consolidate exynos related Kconfig entries * tag 'samsung-exynos' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (22 commits) ARM: EXYNOS: Enable multi-platform build support ARM: EXYNOS: Consolidate Kconfig entries ARM: EXYNOS: Add support for EXYNOS5410 SoC ARM: EXYNOS: Support secondary CPU boot of Exynos3250 ARM: EXYNOS: Add Exynos3250 SoC ID ARM: EXYNOS: Add 5800 SoC support ARM: EXYNOS: initial board support for exynos5260 SoC cpufreq: exynos: Fix the compile error ARM: S3C24XX: move debug-macro.S into the common space ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro ARM: S3C24XX: trim down debug uart handling ARM: compressed/head.S: remove s3c24xx special case ARM: EXYNOS: Remove unnecessary inclusion of cpu.h ARM: EXYNOS: Migrate Exynos specific macros from plat to mach ARM: EXYNOS: Remove exynos_subsys registration ARM: EXYNOS: Remove duplicate lines in Makefile ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling ARM: dts: Remove g2d_pd node for exynos5420 ARM: dts: Remove mau_pd node for exynos5420 ARM: exynos_defconfig: enable HS-I2C to fix for mmc partition mount ... Signed-off-by: Olof Johansson <olof@lixom.net>
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/* linux arch/arm/mach-exynos4/hotplug.c
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*
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* Cloned from linux/arch/arm/mach-realview/hotplug.c
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*
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* Copyright (C) 2002 ARM Ltd.
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <asm/cacheflush.h>
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#include <asm/cp15.h>
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#include <asm/smp_plat.h>
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#include "common.h"
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#include "regs-pmu.h"
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static inline void cpu_leave_lowpower(void)
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{
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unsigned int v;
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asm volatile(
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"mrc p15, 0, %0, c1, c0, 0\n"
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" orr %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 0\n"
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" mrc p15, 0, %0, c1, c0, 1\n"
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" orr %0, %0, %2\n"
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" mcr p15, 0, %0, c1, c0, 1\n"
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: "=&r" (v)
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: "Ir" (CR_C), "Ir" (0x40)
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: "cc");
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}
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static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
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{
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for (;;) {
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/* make cpu1 to be turned off at next WFI command */
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if (cpu == 1)
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exynos_cpu_power_down(cpu);
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/*
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* here's the WFI
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*/
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asm(".word 0xe320f003\n"
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:
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:
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: "memory", "cc");
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if (pen_release == cpu_logical_map(cpu)) {
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/*
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* OK, proper wakeup, we're done
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*/
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break;
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}
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/*
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* Getting here, means that we have come out of WFI without
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* having been woken up - this shouldn't happen
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*
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* Just note it happening - when we're woken, we can report
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* its occurrence.
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*/
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(*spurious)++;
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}
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}
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/*
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* platform-specific code to shutdown a CPU
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*
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* Called with IRQs disabled
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*/
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void __ref exynos_cpu_die(unsigned int cpu)
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{
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int spurious = 0;
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v7_exit_coherency_flush(louis);
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platform_do_lowpower(cpu, &spurious);
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/*
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* bring this CPU back into the world of cache
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* coherency, and then restore interrupts
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*/
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cpu_leave_lowpower();
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if (spurious)
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pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious);
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}
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