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 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); 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 73
