Hello
This patch adds support for "print_cpuinfo" on Samsung s3c24x0 based targets. If activated by "#define CONFIG_DISPLAY_CPUINFO", the chip ID and the 3 main cpu frequencies will be displayed.
Dave
Signed-off-by: David Müller d.mueller@elsoft.ch
diff --git a/arch/arm/cpu/arm920t/s3c24x0/Makefile b/arch/arm/cpu/arm920t/s3c24x0/Makefile index bd53724..0029700 100644 --- a/arch/arm/cpu/arm920t/s3c24x0/Makefile +++ b/arch/arm/cpu/arm920t/s3c24x0/Makefile @@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(SOC).o
COBJS-$(CONFIG_USE_IRQ) += interrupts.o +COBJS-$(CONFIG_DISPLAY_CPUINFO) += cpu_info.o COBJS-y += speed.o COBJS-y += timer.o COBJS-y += usb.o diff --git a/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c b/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c new file mode 100644 index 0000000..14c5c6a --- /dev/null +++ b/arch/arm/cpu/arm920t/s3c24x0/cpu_info.c @@ -0,0 +1,54 @@ +/* + * (C) Copyright 2010 + * David Mueller d.mueller@elsoft.ch + * + * 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/s3c24x0_cpu.h> + +typedef ulong (*getfreq)(void); + +static const getfreq freq_f[] = { + get_FCLK, + get_HCLK, + get_PCLK, +}; + +static const char freq_c[] = { 'F', 'H', 'P' }; + +int print_cpuinfo(void) +{ + int i; + char buf[32]; +/* the S3C2400 seems to be lacking a CHIP ID register */ +#ifndef CONFIG_S3C2400 + ulong cpuid; + struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio(); + + cpuid = readl(&gpio->gstatus1); + printf("CPUID: %8lX\n", cpuid); +#endif + for (i = 0; i < ARRAY_SIZE(freq_f); i++) + printf("%cCLK: %8s MHz\n", freq_c[i], strmhz(buf, freq_f[i]())); + + return 0; +}