[U-Boot] [PATCH v3 06/19] SPEAr : Basic arch related support added for SPEAr SoCs

[Vipin KUMAR]

Adding CONFIG_DISPLAY_CPUINFO and CONFIG_ARCH_CPU_INIT support for SPEAr3xx and
SPEAr6xx SoCs

CONFIG_DISPLAY_CPUINFO includes the built CPU related information

Earlier, architecture specific init code was mixed with board initialization
code in board/spear/...
CONFIG_ARCH_CPU_INIT includes the architecture specific initialisation code
with in arch/arm/spear/cpu.c

Signed-off-by: Vipin Kumar <vipin.kumar at st.com>
---
 arch/arm/cpu/arm926ejs/spear/Makefile      |    3 +-
 arch/arm/cpu/arm926ejs/spear/cpu.c         |   78 ++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-spear/spr_misc.h |    5 ++
 include/configs/spear-common.h             |    2 +
 4 files changed, 87 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/cpu/arm926ejs/spear/cpu.c

diff --git a/arch/arm/cpu/arm926ejs/spear/Makefile b/arch/arm/cpu/arm926ejs/spear/Makefile
index bf8dfa8..6ca8c6e 100644
--- a/arch/arm/cpu/arm926ejs/spear/Makefile
+++ b/arch/arm/cpu/arm926ejs/spear/Makefile
@@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).a
 
-COBJS	:= reset.o \
+COBJS	:= cpu.o \
+	   reset.o \
 	   timer.o
 SOBJS	:=
 
diff --git a/arch/arm/cpu/arm926ejs/spear/cpu.c b/arch/arm/cpu/arm926ejs/spear/cpu.c
new file mode 100644
index 0000000..0f66e05
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/spear/cpu.c
@@ -0,0 +1,78 @@
+/*
+ * (C) Copyright 2010
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar at st.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_misc.h>
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+	struct misc_regs *const misc_p =
+	    (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+	u32 periph1_clken;
+
+	periph1_clken = readl(&misc_p->periph1_clken);
+
+#if defined(CONFIG_PL011_SERIAL)
+	periph1_clken |= MISC_UART0ENB;
+#endif
+#if defined(CONFIG_DESIGNWARE_ETH)
+	periph1_clken |= MISC_ETHENB;
+#endif
+#if defined(CONFIG_DW_UDC)
+	periph1_clken |= MISC_USBDENB;
+#endif
+#if defined(CONFIG_DW_I2C)
+	periph1_clken |= MISC_I2CENB;
+#endif
+#if defined(CONFIG_ST_SMI)
+	periph1_clken |= MISC_SMIENB;
+#endif
+#if defined(CONFIG_NAND_FSMC)
+	periph1_clken |= MISC_FSMCENB;
+#endif
+
+	writel(periph1_clken, &misc_p->periph1_clken);
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+#ifdef CONFIG_SPEAR300
+	printf("CPU:   SPEAr300\n");
+#elif defined(CONFIG_SPEAR310)
+	printf("CPU:   SPEAr310\n");
+#elif defined(CONFIG_SPEAR320)
+	printf("CPU:   SPEAr320\n");
+#elif defined(CONFIG_SPEAR600)
+	printf("CPU:   SPEAr600\n");
+#else
+#error CPU not supported in spear platform
+#endif
+	return 0;
+}
+#endif
diff --git a/arch/arm/include/asm/arch-spear/spr_misc.h b/arch/arm/include/asm/arch-spear/spr_misc.h
index 8b96d9b..045d2bb 100644
--- a/arch/arm/include/asm/arch-spear/spr_misc.h
+++ b/arch/arm/include/asm/arch-spear/spr_misc.h
@@ -126,5 +126,10 @@ struct misc_regs {
 
 /* PERIPH1_CLKEN, PERIPH1_RST value */
 #define MISC_USBDENB			0x01000000
+#define MISC_ETHENB			0x00800000
+#define MISC_SMIENB			0x00200000
+#define MISC_FSMCENB			0x00000200
+#define MISC_I2CENB			0x00000080
+#define MISC_UART0ENB			0x00000008
 
 #endif
diff --git a/include/configs/spear-common.h b/include/configs/spear-common.h
index b526558..10beef7 100644
--- a/include/configs/spear-common.h
+++ b/include/configs/spear-common.h
@@ -168,6 +168,8 @@
 #define CONFIG_ENV_SIZE				0x02000
 
 /* Miscellaneous configurable options */
+#define CONFIG_ARCH_CPU_INIT			1
+#define CONFIG_DISPLAY_CPUINFO			1
 #define CONFIG_BOOT_PARAMS_ADDR			0x00000100
 #define CONFIG_CMDLINE_TAG			1
 #define CONFIG_SETUP_MEMORY_TAGS		1
-- 
1.6.0.2