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1.2 KiB
1.2 KiB
Summary
=======
This README is about U-Boot support for SAMSUNG's ARM Cortex-A8 based S5PC1xx
family of SoCs (S5PC100 [1] and S5PC110).
Currently the following board is supported:
* SMDKC100 [2]
Toolchain
=========
While ARM Cortex-A8 support ARM v7 instruction set (-march=armv7a) we compile
with -march=armv5 to allow more compilers to work. For U-Boot code this has
no performance impact.
Build
=====
* SMDKC100
make smdkc100_config
make
Interfaces
==========
cpu
To check SoC:
if (cpu_is_s5pc100())
printf("cpu is s5pc100\n");
or
if (cpu_is_s5pc110())
printf("cpu is s5pc110\n");
gpio
struct s5pc100_gpio *gpio = (struct s5pc100_gpio*)S5PC100_GPIO_BASE;
/* GPA[0] pin set to irq */
gpio_cfg_pin(&gpio->gpio_a, 0, GPIO_IRQ);
/* GPA[0] pin set to input */
gpio_direction_input(&gpio->gpio_a, 0);
/* GPA[0] pin set to output/high */
gpio_direction_output(&gpio->gpio_a, 0, 1);
/* GPA[0] value set to low */
gpio_set_value(&gpio->gpio_a, 0, 0);
/* get GPA[0] value */
value = gpio_get_value(&gpio->gpio_a, 0);
Links
=====
[1] S5PC100:
http://www.samsung.com/global/business/semiconductor/productInfo.do?
fmly_id=229&partnum=S5PC100
[2] SMDKC100:
http://meritech.co.kr/eng/products/product_view.php?num=28