Uboot移植（smart210）

淩亂°似流年 2022-06-16 01:17 367阅读 0赞

初步移植：在基本的基础之上移植
    1.#define IS_SAMSUNG_TYPE(type, id)			\
    static inline int cpu_is_##type(void)			\
    { 							\
    	return s5p_cpu_id == id ? 1 : 0;		\
    }
    IS_SAMSUNG_TYPE(s5pc100, 0xc100)
    IS_SAMSUNG_TYPE(s5pc110, 0xc110)
    
    转换成下面的：
    #define IS_SAMSUNG_TYPE(s5pc100, 0xc100) \ static inline int cpu_is_s5pc100(void) \ { \ return s5p_cpu_id == 0xc100 ? 1 : 0; \ }
    2.更改文件arch/arm/include/asm/arch-s5pc1XX/cpu.h
    arch\arm\cpu\armv7\s5p-common\cpu_info.c
    static inline int cpu_is_s5pc110(void)			\
    { 							
    	return 1 ;		
    }
    这个比较除暴，，，下面调用了这个宏怎么办？
    最后推翻上面的改动部分，全错 直接在那个函数cpu_info.c里面添加
    int print_cpuinfo(void)
    { 
    	char buf[32];
    
    	/*printf("CPU:\t%s%X@%sMHz\n", s5p_get_cpu_name(), s5p_cpu_id, strmhz(buf, get_arm_clk()));*/
    	//printf("\nCPU: S5PV210@%ldMHz(%s)\n", get_ARMCLK()/1000000, ((result_set == 1) ? "OK" : "FAIL"));
    	printf("\nCPU: S5PV210@%sMHz(OK!)\n", strmhz(buf, get_arm_clk()));
    	return 0;
    }
    2.修改S5PV210@400MHz(OK!)中的400的问题，去跟中函数，最后会到
    cpu.h中
    samsung_get_base_clock
    return S5PC110_CLOCK_BASE;
    在cpu.h中照这个宏定义，找aPLL计算公式也是对的
    
    
    
    
    #define APLL_LOCKTIME_VAL 0x2cf
    #define CLK_DIV0_MASK 0x7fffffff
    #define APLL_MDIV 0x7d
    #define APLL_PDIV 0x3
    #define APLL_SDIV 0x1
    #define APLL_LOCKTIME_VAL 0x2cf
    #define AFC_ON 0x00000000
    #define AFC_OFF 0x10000010
    
    #define EPLL_MDIV 0x60
    #define EPLL_PDIV 0x6
    #define EPLL_SDIV 0x2
    
    #define VPLL_MDIV 0x6c
    #define VPLL_PDIV 0x6
    #define VPLL_SDIV 0x3
    /* CLK_DIV0 */
    #define APLL_RATIO 0
    #define A2M_RATIO 4
    #define HCLK_MSYS_RATIO 8
    #define PCLK_MSYS_RATIO 12
    #define HCLK_DSYS_RATIO 16
    #define PCLK_DSYS_RATIO 20
    #define HCLK_PSYS_RATIO 24
    #define PCLK_PSYS_RATIO 28
    #define set_pll(mdiv, pdiv, sdiv) (1<<31 | mdiv<<16 | pdiv<<8 | sdiv)
    
    #define APLL_VAL set_pll(APLL_MDIV,APLL_PDIV,APLL_SDIV)
    #define MPLL_VAL set_pll(MPLL_MDIV,MPLL_PDIV,MPLL_SDIV)
    #define EPLL_VAL set_pll(EPLL_MDIV,EPLL_PDIV,EPLL_SDIV)
    #define VPLL_VAL set_pll(VPLL_MDIV,VPLL_PDIV,VPLL_SDIV)
    #define CLK_DIV0_VAL ((0<<APLL_RATIO)|(4<<A2M_RATIO)|(4<<HCLK_MSYS_RATIO)|(1<<PCLK_MSYS_RATIO)\ |(3<<HCLK_DSYS_RATIO)|(1<<PCLK_DSYS_RATIO)|(4<<HCLK_PSYS_RATIO)|(1<<PCLK_PSYS_RATIO))
    
    
    #define CLK_DIV1_VAL ((1<<16)|(1<<12)|(1<<8)|(1<<4))
    #define CLK_DIV2_VAL (1<<0)
    
    
    
    
    
    /****for x210zhu****************/
    #define CONFIG_NR_DRAM_BANKS 2
    CONFIG_SYS_SDRAM_BASE   0x30000000
    #define PHYS_SDRAM_1 CONFIG_SYS_SDRAM_BASE /* OneDRAM Bank #0 */
    #define PHYS_SDRAM_1_SIZE (256 << 20) /* 80 MB in Bank #0 */
    #define PHYS_SDRAM_2 0x40000000 /* mDDR DMC1 Bank #1 */
    #define PHYS_SDRAM_2_SIZE (256 << 20) /* 256 MB in Bank #1 */
    //#define PHYS_SDRAM_3 0x50000000 /* mDDR DMC2 Bank #2 */
    //#define PHYS_SDRAM_3_SIZE (128 << 20) 
    /****board_init_f***/机器码问题
    #ifdef CONFIG_MACH_TYPE
    	gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
    #endif
    后面又重新定义了，（这是新版本中的一点）
    int board_init(void)
    { 
    	/* Set Initial global variables */
    	s5pc110_gpio = (struct s5pc110_gpio *)S5PC110_GPIO_BASE;
    
    	gd->bd->bi_arch_number = MACH_TYPE_GONI;
    	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
    
    	return 0;
    }
    可见文件集中：：：：
    #define MACH_TYPE_TNETV107X 2418
    #define MACH_TYPE_SMDKV210 2456/****/
    #define MACH_TYPE_OMAP_ZOOM3 2464
    #define MACH_TYPE_OMAP_3630SDP 2465
    在上诉文件中，改即可
    gd->bd->bi_arch_number = MACH_TYPE_SMDKV210;
    MMC 卡的编号问题一定注意
    CONFIG_SYS_MMC_ENV_DEV = 0代表(内部)flash  =1代表sd  
    int saveenv(void)
    { 
    	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
    	ssize_t	len;
    	char	*res;
    	struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
    	u32	offset;
    	int	ret, copy = 0;
    
    	if (init_mmc_for_env(mmc))
    		return 1;
    /********************************/
    /***s5p_goni.h中添加代码即可*修改相应的MAKE file*/
    #define CONFIG_ENV_SIZE CFG_ENV_SIZE /* 256 KiB, 0x40000 */
    #define CONFIG_ENV_IS_IN_MMC 1
    #define CONFIG_SYS_MMC_ENV_DEV 0
    
    /***include/common 中的MAke file 注释掉COBJS-$(CONFIG_ENV_IS_IN_MMC) += env_mmc.o COBJS-$(CONFIG_ENV_IS_IN_FAT) += env_fat.o COBJS-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o COBJS-$(CONFIG_ENV_IS_IN_NVRAM) += env_nvram.o #COBJS-$(CONFIG_ENV_IS_IN_ONENAND) += env_onenand.o COBJS-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o 还有其他的MAkefile 修改见笔记