Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / at91 / cpu.c

diff --git a/arch/arm/cpu/armv7/at91/cpu.c b/arch/arm/cpu/armv7/at91/cpu.c
new file mode 100644 (file)
index 0000000..2fbf60d
--- /dev/null
+++ b/arch/arm/cpu/armv7/at91/cpu.c
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2010
+ * Reinhard Meyer, reinhard.meyer@emk-elektronik.de
+ * (C) Copyright 2009
+ * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ * (C) Copyright 2013
+ * Bo Shen <voice.shen@atmel.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_dbu.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_pit.h>
+#include <asm/arch/at91_gpbr.h>
+#include <asm/arch/clk.h>
+
+#ifndef CONFIG_SYS_AT91_MAIN_CLOCK
+#define CONFIG_SYS_AT91_MAIN_CLOCK 0
+#endif
+
+int arch_cpu_init(void)
+{
+       return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK);
+}
+
+void arch_preboot_os(void)
+{
+       ulong cpiv;
+       at91_pit_t *pit = (at91_pit_t *)ATMEL_BASE_PIT;
+
+       cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir));
+
+       /*
+        * Disable PITC
+        * Add 0x1000 to current counter to stop it faster
+        * without waiting for wrapping back to 0
+        */
+       writel(cpiv + 0x1000, &pit->mr);
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+       char buf[32];
+
+       printf("CPU: %s\n", get_cpu_name());
+       printf("Crystal frequency: %8s MHz\n",
+              strmhz(buf, get_main_clk_rate()));
+       printf("CPU clock        : %8s MHz\n",
+              strmhz(buf, get_cpu_clk_rate()));
+       printf("Master clock     : %8s MHz\n",
+              strmhz(buf, get_mck_clk_rate()));
+
+       return 0;
+}
+#endif
+
+void enable_caches(void)
+{
+}
+
+unsigned int get_chip_id(void)
+{
+       return readl(ATMEL_BASE_DBGU + AT91_DBU_CIDR) & ~AT91_DBU_CIDR_MASK;
+}
+
+unsigned int get_extension_chip_id(void)
+{
+       return readl(ATMEL_BASE_DBGU + AT91_DBU_EXID);
+}