Merge branch 'restart' into for-linus

Conflicts:
	arch/arm/mach-exynos/cpu.c

The changes to arch/arm/mach-exynos/cpu.c were moved to
mach-exynos/common.c.

32 files changed, 87 insertions, 2 deletions

diff --git a/arch/arm/mach-imx/clock-imx6q.c b/arch/arm/mach-imx/clock-imx6q.c
index 039a7abb165a..9273c2a24b54 100644
--- a/arch/arm/mach-imx/clock-imx6q.c
+++ b/arch/arm/mach-imx/clock-imx6q.c
@@ -1931,14 +1931,12 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
                 val |= 0x1 << BP_CLPCR_LPM;
                 val &= ~BM_CLPCR_VSTBY;
                 val &= ~BM_CLPCR_SBYOS;
-                val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
                 break;
         case STOP_POWER_OFF:
                 val |= 0x2 << BP_CLPCR_LPM;
                 val |= 0x3 << BP_CLPCR_STBY_COUNT;
                 val |= BM_CLPCR_VSTBY;
                 val |= BM_CLPCR_SBYOS;
-                val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
                 break;
         default:
                 return -EINVAL;
diff --git a/arch/arm/mach-imx/mach-apf9328.c b/arch/arm/mach-imx/mach-apf9328.c
index 1e486e67dabb..146a4f073464 100644
--- a/arch/arm/mach-imx/mach-apf9328.c
+++ b/arch/arm/mach-imx/mach-apf9328.c
@@ -139,4 +139,5 @@ MACHINE_START(APF9328, "Armadeus APF9328")
         .handle_irq   = imx1_handle_irq,
         .timer        = &apf9328_timer,
         .init_machine = apf9328_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-armadillo5x0.c b/arch/arm/mach-imx/mach-armadillo5x0.c
index c9a9cf67755e..e4f426a09899 100644
--- a/arch/arm/mach-imx/mach-armadillo5x0.c
+++ b/arch/arm/mach-imx/mach-armadillo5x0.c
@@ -561,4 +561,5 @@ MACHINE_START(ARMADILLO5X0, "Armadillo-500")
         .handle_irq = imx31_handle_irq,
         .timer = &armadillo5x0_timer,
         .init_machine = armadillo5x0_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-bug.c b/arch/arm/mach-imx/mach-bug.c
index 313f62ddc1ef..9a9897749dd6 100644
--- a/arch/arm/mach-imx/mach-bug.c
+++ b/arch/arm/mach-imx/mach-bug.c
@@ -65,4 +65,5 @@ MACHINE_START(BUG, "BugLabs BUGBase")
         .handle_irq = imx31_handle_irq,
         .timer = &bug_timer,
         .init_machine = bug_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-cpuimx27.c b/arch/arm/mach-imx/mach-cpuimx27.c
index edb373052576..d085aea08709 100644
--- a/arch/arm/mach-imx/mach-cpuimx27.c
+++ b/arch/arm/mach-imx/mach-cpuimx27.c
@@ -318,4 +318,5 @@ MACHINE_START(EUKREA_CPUIMX27, "EUKREA CPUIMX27")
         .handle_irq = imx27_handle_irq,
         .timer = &eukrea_cpuimx27_timer,
         .init_machine = eukrea_cpuimx27_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-cpuimx35.c b/arch/arm/mach-imx/mach-cpuimx35.c
index 362aae780601..8ecc872b2547 100644
--- a/arch/arm/mach-imx/mach-cpuimx35.c
+++ b/arch/arm/mach-imx/mach-cpuimx35.c
@@ -207,4 +207,5 @@ MACHINE_START(EUKREA_CPUIMX35SD, "Eukrea CPUIMX35")
         .handle_irq = imx35_handle_irq,
         .timer = &eukrea_cpuimx35_timer,
         .init_machine = eukrea_cpuimx35_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-eukrea_cpuimx25.c b/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
index ab8fbcc472b5..76a97a598b9e 100644
--- a/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
+++ b/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
@@ -170,4 +170,5 @@ MACHINE_START(EUKREA_CPUIMX25SD, "Eukrea CPUIMX25")
         .handle_irq = imx25_handle_irq,
         .timer = &eukrea_cpuimx25_timer,
         .init_machine = eukrea_cpuimx25_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index 38eb9e45110b..c2766ae02b4f 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -282,4 +282,5 @@ MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
         .handle_irq = imx27_handle_irq,
         .timer = &visstrim_m10_timer,
         .init_machine = visstrim_m10_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-imx27ipcam.c b/arch/arm/mach-imx/mach-imx27ipcam.c
index 7052155d0557..c9d350c5dcc8 100644
--- a/arch/arm/mach-imx/mach-imx27ipcam.c
+++ b/arch/arm/mach-imx/mach-imx27ipcam.c
@@ -78,4 +78,5 @@ MACHINE_START(IMX27IPCAM, "Freescale IMX27IPCAM")
         .handle_irq = imx27_handle_irq,
         .timer = &mx27ipcam_timer,
         .init_machine = mx27ipcam_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-imx27lite.c b/arch/arm/mach-imx/mach-imx27lite.c
index 8d6a63521f17..1f45b9189229 100644
--- a/arch/arm/mach-imx/mach-imx27lite.c
+++ b/arch/arm/mach-imx/mach-imx27lite.c
@@ -84,4 +84,5 @@ MACHINE_START(IMX27LITE, "LogicPD i.MX27LITE")
         .handle_irq = imx27_handle_irq,
         .timer = &mx27lite_timer,
         .init_machine = mx27lite_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 8deb012189b5..05b49bb5d677 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -10,10 +10,13 @@
  * http://www.gnu.org/copyleft/gpl.html
  */
 
+#include <linux/delay.h>
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
 #include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -23,6 +26,36 @@
 #include <mach/common.h>
 #include <mach/hardware.h>
 
+void imx6q_restart(char mode, const char *cmd)
+{
+        struct device_node *np;
+        void __iomem *wdog_base;
+
+        np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-wdt");
+        wdog_base = of_iomap(np, 0);
+        if (!wdog_base)
+                goto soft;
+
+        imx_src_prepare_restart();
+
+        /* enable wdog */
+        writew_relaxed(1 << 2, wdog_base);
+        /* write twice to ensure the request will not get ignored */
+        writew_relaxed(1 << 2, wdog_base);
+
+        /* wait for reset to assert ... */
+        mdelay(500);
+
+        pr_err("Watchdog reset failed to assert reset\n");
+
+        /* delay to allow the serial port to show the message */
+        mdelay(50);
+
+soft:
+        /* we'll take a jump through zero as a poor second */
+        soft_restart(0);
+}
+
 static void __init imx6q_init_machine(void)
 {
         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
@@ -83,4 +116,5 @@ DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)")
         .timer          = &imx6q_timer,
         .init_machine   = imx6q_init_machine,
         .dt_compat      = imx6q_dt_compat,
+        .restart        = imx6q_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-kzm_arm11_01.c b/arch/arm/mach-imx/mach-kzm_arm11_01.c
index 5f37f89e40fa..fc78e8071cd1 100644
--- a/arch/arm/mach-imx/mach-kzm_arm11_01.c
+++ b/arch/arm/mach-imx/mach-kzm_arm11_01.c
@@ -279,4 +279,5 @@ MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
         .handle_irq = imx31_handle_irq,
         .timer = &kzm_timer,
         .init_machine = kzm_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx1ads.c b/arch/arm/mach-imx/mach-mx1ads.c
index fc49785e7340..97046088ff1a 100644
--- a/arch/arm/mach-imx/mach-mx1ads.c
+++ b/arch/arm/mach-imx/mach-mx1ads.c
@@ -147,6 +147,7 @@ MACHINE_START(MX1ADS, "Freescale MX1ADS")
         .handle_irq = imx1_handle_irq,
         .timer = &mx1ads_timer,
         .init_machine = mx1ads_init,
+        .restart        = mxc_restart,
 MACHINE_END
 
 MACHINE_START(MXLADS, "Freescale MXLADS")
@@ -157,4 +158,5 @@ MACHINE_START(MXLADS, "Freescale MXLADS")
         .handle_irq = imx1_handle_irq,
         .timer = &mx1ads_timer,
         .init_machine = mx1ads_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c
index 25f84028d055..8d9f95514b1f 100644
--- a/arch/arm/mach-imx/mach-mx21ads.c
+++ b/arch/arm/mach-imx/mach-mx21ads.c
@@ -312,4 +312,5 @@ MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
         .handle_irq = imx21_handle_irq,
         .timer = &mx21ads_timer,
         .init_machine = mx21ads_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx25_3ds.c b/arch/arm/mach-imx/mach-mx25_3ds.c
index 88dccf122243..f26734298aa6 100644
--- a/arch/arm/mach-imx/mach-mx25_3ds.c
+++ b/arch/arm/mach-imx/mach-mx25_3ds.c
@@ -270,4 +270,5 @@ MACHINE_START(MX25_3DS, "Freescale MX25PDK (3DS)")
         .handle_irq = imx25_handle_irq,
         .timer = &mx25pdk_timer,
         .init_machine = mx25pdk_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index ba232d79fa81..18f35816706a 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -425,4 +425,5 @@ MACHINE_START(MX27_3DS, "Freescale MX27PDK")
         .handle_irq = imx27_handle_irq,
         .timer = &mx27pdk_timer,
         .init_machine = mx27pdk_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx27ads.c b/arch/arm/mach-imx/mach-mx27ads.c
index 74dd5731eb61..0228d2e07fe0 100644
--- a/arch/arm/mach-imx/mach-mx27ads.c
+++ b/arch/arm/mach-imx/mach-mx27ads.c
@@ -351,4 +351,5 @@ MACHINE_START(MX27ADS, "Freescale i.MX27ADS")
         .handle_irq = imx27_handle_irq,
         .timer = &mx27ads_timer,
         .init_machine = mx27ads_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index b8c54b840185..2b565c381347 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -770,4 +770,5 @@ MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
         .timer = &mx31_3ds_timer,
         .init_machine = mx31_3ds_init,
         .reserve = mx31_3ds_reserve,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx31ads.c b/arch/arm/mach-imx/mach-mx31ads.c
index 9cc1a49053bb..4917aab0e253 100644
--- a/arch/arm/mach-imx/mach-mx31ads.c
+++ b/arch/arm/mach-imx/mach-mx31ads.c
@@ -542,4 +542,5 @@ MACHINE_START(MX31ADS, "Freescale MX31ADS")
         .handle_irq = imx31_handle_irq,
         .timer = &mx31ads_timer,
         .init_machine = mx31ads_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx31lilly.c b/arch/arm/mach-imx/mach-mx31lilly.c
index 102ec99357cc..02401bbd6d53 100644
--- a/arch/arm/mach-imx/mach-mx31lilly.c
+++ b/arch/arm/mach-imx/mach-mx31lilly.c
@@ -303,4 +303,5 @@ MACHINE_START(LILLY1131, "INCO startec LILLY-1131")
         .handle_irq = imx31_handle_irq,
         .timer = &mx31lilly_timer,
         .init_machine = mx31lilly_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx31lite.c b/arch/arm/mach-imx/mach-mx31lite.c
index 5366d2de18fd..ef80751712e7 100644
--- a/arch/arm/mach-imx/mach-mx31lite.c
+++ b/arch/arm/mach-imx/mach-mx31lite.c
@@ -287,4 +287,5 @@ MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
         .handle_irq = imx31_handle_irq,
         .timer = &mx31lite_timer,
         .init_machine = mx31lite_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index 93269150309c..b95981dacb2b 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -600,4 +600,5 @@ MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
         .handle_irq = imx31_handle_irq,
         .timer = &mx31moboard_timer,
         .init_machine = mx31moboard_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
index 7a462025a0f7..0af6c9c5b3fd 100644
--- a/arch/arm/mach-imx/mach-mx35_3ds.c
+++ b/arch/arm/mach-imx/mach-mx35_3ds.c
@@ -224,4 +224,5 @@ MACHINE_START(MX35_3DS, "Freescale MX35PDK")
         .handle_irq = imx35_handle_irq,
         .timer = &mx35pdk_timer,
         .init_machine = mx35_3ds_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-mxt_td60.c b/arch/arm/mach-imx/mach-mxt_td60.c
index 125c19643b0f..8b3d3f07d894 100644
--- a/arch/arm/mach-imx/mach-mxt_td60.c
+++ b/arch/arm/mach-imx/mach-mxt_td60.c
@@ -274,4 +274,5 @@ MACHINE_START(MXT_TD60, "Maxtrack i-MXT TD60")
         .handle_irq = imx27_handle_irq,
         .timer = &mxt_td60_timer,
         .init_machine = mxt_td60_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-pca100.c b/arch/arm/mach-imx/mach-pca100.c
index 26072f4b02e3..d3b9c6b5edde 100644
--- a/arch/arm/mach-imx/mach-pca100.c
+++ b/arch/arm/mach-imx/mach-pca100.c
@@ -442,4 +442,5 @@ MACHINE_START(PCA100, "phyCARD-i.MX27")
         .handle_irq = imx27_handle_irq,
         .init_machine = pca100_init,
         .timer = &pca100_timer,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-pcm037.c b/arch/arm/mach-imx/mach-pcm037.c
index efd6b536ef6a..d7e151669ed3 100644
--- a/arch/arm/mach-imx/mach-pcm037.c
+++ b/arch/arm/mach-imx/mach-pcm037.c
@@ -696,4 +696,5 @@ MACHINE_START(PCM037, "Phytec Phycore pcm037")
         .handle_irq = imx31_handle_irq,
         .timer = &pcm037_timer,
         .init_machine = pcm037_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-pcm038.c b/arch/arm/mach-imx/mach-pcm038.c
index a17e9c7dfca0..16f126da9f8f 100644
--- a/arch/arm/mach-imx/mach-pcm038.c
+++ b/arch/arm/mach-imx/mach-pcm038.c
@@ -357,4 +357,5 @@ MACHINE_START(PCM038, "phyCORE-i.MX27")
         .handle_irq = imx27_handle_irq,
         .timer = &pcm038_timer,
         .init_machine = pcm038_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-pcm043.c b/arch/arm/mach-imx/mach-pcm043.c
index 7366c2ae3ea5..06dc106519ae 100644
--- a/arch/arm/mach-imx/mach-pcm043.c
+++ b/arch/arm/mach-imx/mach-pcm043.c
@@ -425,4 +425,5 @@ MACHINE_START(PCM043, "Phytec Phycore pcm043")
         .handle_irq = imx35_handle_irq,
         .timer = &pcm043_timer,
         .init_machine = pcm043_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-qong.c b/arch/arm/mach-imx/mach-qong.c
index 4ff5faf102a8..260621055b6b 100644
--- a/arch/arm/mach-imx/mach-qong.c
+++ b/arch/arm/mach-imx/mach-qong.c
@@ -273,4 +273,5 @@ MACHINE_START(QONG, "Dave/DENX QongEVB-LITE")
         .handle_irq = imx31_handle_irq,
         .timer = &qong_timer,
         .init_machine = qong_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-scb9328.c b/arch/arm/mach-imx/mach-scb9328.c
index bb6e5b25d8d0..cb9ceae2f648 100644
--- a/arch/arm/mach-imx/mach-scb9328.c
+++ b/arch/arm/mach-imx/mach-scb9328.c
@@ -144,4 +144,5 @@ MACHINE_START(SCB9328, "Synertronixx scb9328")
         .handle_irq = imx1_handle_irq,
         .timer = &scb9328_timer,
         .init_machine = scb9328_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/mach-vpr200.c b/arch/arm/mach-imx/mach-vpr200.c
index 69092458f2d9..033257e553ef 100644
--- a/arch/arm/mach-imx/mach-vpr200.c
+++ b/arch/arm/mach-imx/mach-vpr200.c
@@ -322,4 +322,5 @@ MACHINE_START(VPR200, "VPR200")
         .handle_irq = imx35_handle_irq,
         .timer = &vpr200_timer,
         .init_machine = vpr200_board_init,
+        .restart        = mxc_restart,
 MACHINE_END
diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c
index a8e33681b732..4bde04f99e38 100644
--- a/arch/arm/mach-imx/src.c
+++ b/arch/arm/mach-imx/src.c
@@ -19,6 +19,7 @@
 
 #define SRC_SCR                         0x000
 #define SRC_GPR1                        0x020
+#define BP_SRC_SCR_WARM_RESET_ENABLE    0
 #define BP_SRC_SCR_CORE1_RST            14
 #define BP_SRC_SCR_CORE1_ENABLE         22
 
@@ -46,11 +47,33 @@ void imx_set_cpu_jump(int cpu, void *jump_addr)
                        src_base + SRC_GPR1 + cpu * 8);
 }
 
+void imx_src_prepare_restart(void)
+{
+        u32 val;
+
+        /* clear enable bits of secondary cores */
+        val = readl_relaxed(src_base + SRC_SCR);
+        val &= ~(0x7 << BP_SRC_SCR_CORE1_ENABLE);
+        writel_relaxed(val, src_base + SRC_SCR);
+
+        /* clear persistent entry register of primary core */
+        writel_relaxed(0, src_base + SRC_GPR1);
+}
+
 void __init imx_src_init(void)
 {
         struct device_node *np;
+        u32 val;
 
         np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-src");
         src_base = of_iomap(np, 0);
         WARN_ON(!src_base);
+
+        /*
+         * force warm reset sources to generate cold reset
+         * for a more reliable restart
+         */
+        val = readl_relaxed(src_base + SRC_SCR);
+        val &= ~(1 << BP_SRC_SCR_WARM_RESET_ENABLE);
+        writel_relaxed(val, src_base + SRC_SCR);
 }