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SPEAr: Add basic arch related support for SPEAr SoCs 

Earlier, architecture specific init code was mixed with board initialization
code in board/spear/... This patch updates architecture support for SPEAr in
latest u-boot and prints the SoC information.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Vipin KUMAR 2012-05-07 13:06:45 +05:30 committed by Albert ARIBAUD
parent 9afc1af01f
commit 962d026b6a
4 changed files with 93 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/cpu/arm926ejs/spear/Makefile
View File

@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).o
COBJS := reset.o \
COBJS := cpu.o \
reset.o \
timer.o
SOBJS :=

82
arch/arm/cpu/arm926ejs/spear/cpu.c Normal file
View File

@ -0,0 +1,82 @@
/*
* (C) Copyright 2010
* Vipin Kumar, ST Micoelectronics, vipin.kumar@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>
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_SPEAR3XX)
periph1_clken |= MISC_GPT2ENB;
#elif defined(CONFIG_SPEAR600)
periph1_clken |= MISC_GPT3ENB;
#endif
#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;
}
#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

7
arch/arm/include/asm/arch-spear/spr_misc.h
View File

@ -126,5 +126,12 @@ struct misc_regs {
/* PERIPH1_CLKEN, PERIPH1_RST value */
#define MISC_USBDENB 0x01000000
#define MISC_ETHENB 0x00800000
#define MISC_SMIENB 0x00200000
#define MISC_GPT3ENB 0x00010000
#define MISC_GPT2ENB 0x00000800
#define MISC_FSMCENB 0x00000200
#define MISC_I2CENB 0x00000080
#define MISC_UART0ENB 0x00000008
#endif

2
include/configs/spear-common.h
View File

@ -183,6 +183,8 @@
#define CONFIG_ENV_SIZE 0x02000
/* Miscellaneous configurable options */
#define CONFIG_ARCH_CPU_INIT
#define CONFIG_DISPLAY_CPUINFO
#define CONFIG_BOOT_PARAMS_ADDR 0x00000100
#define CONFIG_CMDLINE_TAG 1
#define CONFIG_SETUP_MEMORY_TAGS 1