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-rw-r--r--arch/arm/mach-bcm/board_bcm281xx.c83
-rw-r--r--arch/arm/mach-bcm/kona.c64
-rw-r--r--arch/arm/mach-bcm/kona.h7
3 files changed, 65 insertions, 89 deletions
diff --git a/arch/arm/mach-bcm/board_bcm281xx.c b/arch/arm/mach-bcm/board_bcm281xx.c
index cb3dc364405c..6be54c10f8cb 100644
--- a/arch/arm/mach-bcm/board_bcm281xx.c
+++ b/arch/arm/mach-bcm/board_bcm281xx.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012-2013 Broadcom Corporation
+ * Copyright (C) 2012-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -11,64 +11,65 @@
* GNU General Public License for more details.
*/
-#include <linux/of_platform.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
#include <linux/clocksource.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
#include <asm/mach/arch.h>
-#include <asm/mach/time.h>
-#include <asm/hardware/cache-l2x0.h>
-#include "bcm_kona_smc.h"
#include "kona.h"
-static int __init kona_l2_cache_init(void)
+#define SECWDOG_OFFSET 0x00000000
+#define SECWDOG_RESERVED_MASK 0xe2000000
+#define SECWDOG_WD_LOAD_FLAG_MASK 0x10000000
+#define SECWDOG_EN_MASK 0x08000000
+#define SECWDOG_SRSTEN_MASK 0x04000000
+#define SECWDOG_CLKS_SHIFT 20
+#define SECWDOG_COUNT_SHIFT 0
+
+static void bcm281xx_restart(enum reboot_mode mode, const char *cmd)
{
- if (!IS_ENABLED(CONFIG_CACHE_L2X0))
- return 0;
+ uint32_t val;
+ void __iomem *base;
+ struct device_node *np_wdog;
- if (bcm_kona_smc_init() < 0) {
- pr_info("Kona secure API not available. Skipping L2 init\n");
- return 0;
+ np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt");
+ if (!np_wdog) {
+ pr_emerg("Couldn't find brcm,kona-wdt\n");
+ return;
+ }
+ base = of_iomap(np_wdog, 0);
+ if (!base) {
+ pr_emerg("Couldn't map brcm,kona-wdt\n");
+ return;
}
- bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
-
- /*
- * The aux_val and aux_mask have no effect since L2 cache is already
- * enabled. Pass 0s for aux_val and 1s for aux_mask for default value.
- */
- return l2x0_of_init(0, ~0);
-}
-
-static void bcm_board_setup_restart(void)
-{
- struct device_node *np;
+ /* Enable watchdog with short timeout (244us). */
+ val = readl(base + SECWDOG_OFFSET);
+ val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK;
+ val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK |
+ (0x15 << SECWDOG_CLKS_SHIFT) |
+ (0x8 << SECWDOG_COUNT_SHIFT);
+ writel(val, base + SECWDOG_OFFSET);
- np = of_find_compatible_node(NULL, NULL, "brcm,bcm11351");
- if (np) {
- if (of_device_is_available(np))
- bcm_kona_setup_restart();
- of_node_put(np);
- }
- /* Restart setup for other boards goes here */
+ /* Wait for reset */
+ while (1);
}
-static void __init board_init(void)
+static void __init bcm281xx_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL,
&platform_bus);
-
- bcm_board_setup_restart();
kona_l2_cache_init();
}
-static const char * const bcm11351_dt_compat[] = { "brcm,bcm11351", NULL, };
+static const char * const bcm281xx_dt_compat[] = {
+ "brcm,bcm11351", /* Have to use the first number upstreamed */
+ NULL,
+};
-DT_MACHINE_START(BCM11351_DT, "BCM281xx Broadcom Application Processor")
- .init_machine = board_init,
- .restart = bcm_kona_restart,
- .dt_compat = bcm11351_dt_compat,
+DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor")
+ .init_machine = bcm281xx_init,
+ .restart = bcm281xx_restart,
+ .dt_compat = bcm281xx_dt_compat,
MACHINE_END
diff --git a/arch/arm/mach-bcm/kona.c b/arch/arm/mach-bcm/kona.c
index 6939d9017f63..768bc2837bf5 100644
--- a/arch/arm/mach-bcm/kona.c
+++ b/arch/arm/mach-bcm/kona.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2013 Broadcom Corporation
+ * Copyright (C) 2012-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -11,55 +11,33 @@
* GNU General Public License for more details.
*/
-#include <linux/of_address.h>
-#include <asm/io.h>
+#include <linux/of_platform.h>
+#include <asm/hardware/cache-l2x0.h>
+#include "bcm_kona_smc.h"
#include "kona.h"
-static void __iomem *watchdog_base;
-
-void bcm_kona_setup_restart(void)
+void __init kona_l2_cache_init(void)
{
- struct device_node *np_wdog;
+ int ret;
- /*
- * The assumption is that whoever calls bcm_kona_setup_restart()
- * also needs a Kona Watchdog Timer entry in Device Tree, i.e. we
- * report an error if the DT entry is missing.
- */
- np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt");
- if (!np_wdog) {
- pr_err("brcm,kona-wdt not found in DT, reboot disabled\n");
+ if (!IS_ENABLED(CONFIG_CACHE_L2X0))
return;
- }
- watchdog_base = of_iomap(np_wdog, 0);
- WARN(!watchdog_base, "failed to map watchdog base");
- of_node_put(np_wdog);
-}
-
-#define SECWDOG_OFFSET 0x00000000
-#define SECWDOG_RESERVED_MASK 0xE2000000
-#define SECWDOG_WD_LOAD_FLAG_MASK 0x10000000
-#define SECWDOG_EN_MASK 0x08000000
-#define SECWDOG_SRSTEN_MASK 0x04000000
-#define SECWDOG_CLKS_SHIFT 20
-#define SECWDOG_LOCK_SHIFT 0
-void bcm_kona_restart(enum reboot_mode mode, const char *cmd)
-{
- uint32_t val;
-
- if (!watchdog_base)
- panic("Watchdog not mapped. Reboot failed.\n");
+ ret = bcm_kona_smc_init();
+ if (ret) {
+ pr_info("Secure API not available (%d). Skipping L2 init.\n",
+ ret);
+ return;
+ }
- /* Enable watchdog2 with very short timeout. */
- val = readl(watchdog_base + SECWDOG_OFFSET);
- val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK;
- val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK |
- (0x8 << SECWDOG_CLKS_SHIFT) |
- (0x8 << SECWDOG_LOCK_SHIFT);
- writel(val, watchdog_base + SECWDOG_OFFSET);
+ bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
- while (1)
- ;
+ /*
+ * The aux_val and aux_mask have no effect since L2 cache is already
+ * enabled. Pass 0s for aux_val and 1s for aux_mask for default value.
+ */
+ ret = l2x0_of_init(0, ~0);
+ if (ret)
+ pr_err("Couldn't enable L2 cache: %d\n", ret);
}
diff --git a/arch/arm/mach-bcm/kona.h b/arch/arm/mach-bcm/kona.h
index 291eca3e06ff..3a7a017c29cd 100644
--- a/arch/arm/mach-bcm/kona.h
+++ b/arch/arm/mach-bcm/kona.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2013 Broadcom Corporation
+ * Copyright (C) 2012-2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@@ -11,7 +11,4 @@
* GNU General Public License for more details.
*/
-#include <linux/reboot.h>
-
-void bcm_kona_setup_restart(void);
-void bcm_kona_restart(enum reboot_mode mode, const char *cmd);
+void __init kona_l2_cache_init(void);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 09:10:22 +0000