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- 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
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