| Minkyu Kang | 8bc4ee9 | 2009-10-01 17:20:40 +0900 | [diff] [blame] | 1 | |
| 2 | Summary |
| 3 | ======= |
| 4 | |
| 5 | This README is about U-Boot support for SAMSUNG's ARM Cortex-A8 based S5PC1xx |
| 6 | family of SoCs (S5PC100 [1] and S5PC110). |
| 7 | |
| 8 | Currently the following board is supported: |
| 9 | |
| 10 | * SMDKC100 [2] |
| 11 | |
| 12 | Toolchain |
| 13 | ========= |
| 14 | |
| 15 | While ARM Cortex-A8 support ARM v7 instruction set (-march=armv7a) we compile |
| 16 | with -march=armv5 to allow more compilers to work. For U-Boot code this has |
| 17 | no performance impact. |
| 18 | |
| 19 | Build |
| 20 | ===== |
| 21 | |
| 22 | * SMDKC100 |
| 23 | |
| 24 | make smdkc100_config |
| 25 | make |
| 26 | |
| 27 | |
| 28 | Interfaces |
| 29 | ========== |
| 30 | |
| 31 | cpu |
| 32 | |
| 33 | To check SoC: |
| 34 | |
| 35 | if (cpu_is_s5pc100()) |
| 36 | printf("cpu is s5pc100\n"); |
| 37 | |
| 38 | or |
| 39 | |
| 40 | if (cpu_is_s5pc110()) |
| 41 | printf("cpu is s5pc110\n"); |
| 42 | |
| 43 | gpio |
| Minkyu Kang | abbe18c | 2010-02-12 18:21:17 +0900 | [diff] [blame] | 44 | |
| 45 | struct s5pc100_gpio *gpio = (struct s5pc100_gpio*)S5PC100_GPIO_BASE; |
| 46 | |
| 47 | /* GPA[0] pin set to irq */ |
| 48 | gpio_cfg_pin(&gpio->gpio_a, 0, GPIO_IRQ); |
| 49 | |
| 50 | /* GPA[0] pin set to input */ |
| 51 | gpio_direction_input(&gpio->gpio_a, 0); |
| 52 | |
| 53 | /* GPA[0] pin set to output/high */ |
| 54 | gpio_direction_output(&gpio->gpio_a, 0, 1); |
| 55 | |
| 56 | /* GPA[0] value set to low */ |
| 57 | gpio_set_value(&gpio->gpio_a, 0, 0); |
| 58 | |
| 59 | /* get GPA[0] value */ |
| 60 | value = gpio_get_value(&gpio->gpio_a, 0); |
| Minkyu Kang | 8bc4ee9 | 2009-10-01 17:20:40 +0900 | [diff] [blame] | 61 | |
| 62 | Links |
| 63 | ===== |
| 64 | |
| 65 | [1] S5PC100: |
| 66 | |
| 67 | http://www.samsung.com/global/business/semiconductor/productInfo.do? |
| 68 | fmly_id=229&partnum=S5PC100 |
| 69 | |
| 70 | [2] SMDKC100: |
| 71 | |
| 72 | http://meritech.co.kr/eng/products/product_view.php?num=28 |