1*4882a593Smuzhiyun 2*4882a593SmuzhiyunSummary 3*4882a593Smuzhiyun======= 4*4882a593Smuzhiyun 5*4882a593SmuzhiyunThis README is about U-Boot support for SAMSUNG's ARM Cortex-A8 based S5PC1xx 6*4882a593Smuzhiyunfamily of SoCs (S5PC100 [1] and S5PC110). 7*4882a593Smuzhiyun 8*4882a593SmuzhiyunCurrently the following board is supported: 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun* SMDKC100 [2] 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunToolchain 13*4882a593Smuzhiyun========= 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunWhile ARM Cortex-A8 support ARM v7 instruction set (-march=armv7a) we compile 16*4882a593Smuzhiyunwith -march=armv5 to allow more compilers to work. For U-Boot code this has 17*4882a593Smuzhiyunno performance impact. 18*4882a593Smuzhiyun 19*4882a593SmuzhiyunBuild 20*4882a593Smuzhiyun===== 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun* SMDKC100 23*4882a593Smuzhiyun 24*4882a593Smuzhiyunmake smdkc100_config 25*4882a593Smuzhiyunmake 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun 28*4882a593SmuzhiyunInterfaces 29*4882a593Smuzhiyun========== 30*4882a593Smuzhiyun 31*4882a593Smuzhiyuncpu 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunTo check SoC: 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun if (cpu_is_s5pc100()) 36*4882a593Smuzhiyun printf("cpu is s5pc100\n"); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun or 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun if (cpu_is_s5pc110()) 41*4882a593Smuzhiyun printf("cpu is s5pc110\n"); 42*4882a593Smuzhiyun 43*4882a593Smuzhiyungpio 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun struct s5pc100_gpio *gpio = (struct s5pc100_gpio*)S5PC100_GPIO_BASE; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /* GPA[0] pin set to irq */ 48*4882a593Smuzhiyun gpio_cfg_pin(&gpio->gpio_a, 0, GPIO_IRQ); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /* GPA[0] pin set to input */ 51*4882a593Smuzhiyun gpio_direction_input(&gpio->gpio_a, 0); 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /* GPA[0] pin set to output/high */ 54*4882a593Smuzhiyun gpio_direction_output(&gpio->gpio_a, 0, 1); 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun /* GPA[0] value set to low */ 57*4882a593Smuzhiyun gpio_set_value(&gpio->gpio_a, 0, 0); 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun /* get GPA[0] value */ 60*4882a593Smuzhiyun value = gpio_get_value(&gpio->gpio_a, 0); 61*4882a593Smuzhiyun 62*4882a593SmuzhiyunLinks 63*4882a593Smuzhiyun===== 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun[1] S5PC100: 66*4882a593Smuzhiyun 67*4882a593Smuzhiyunhttp://www.samsung.com/global/business/semiconductor/productInfo.do? 68*4882a593Smuzhiyunfmly_id=229&partnum=S5PC100 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun[2] SMDKC100: 71*4882a593Smuzhiyun 72*4882a593Smuzhiyunhttp://meritech.co.kr/eng/products/product_view.php?num=28 73