| |
| 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 |
