C++ (Cpp) early_init_dt_check_for_initrdの例

コード例 #1

ファイル: prom.c プロジェクト: ANFS/ANFS-kernel

/* MS this is Microblaze specifig function */
static int __init early_init_dt_scan_serial_full(unsigned long node,
				const char *uname, int depth, void *data)
{
	unsigned long l;
	char *p;
	unsigned int addr;

	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);

/* find all serial nodes */
	if (strncmp(uname, "serial", 6) != 0)
		return 0;

	early_init_dt_check_for_initrd(node);

/* find compatible node with uartlite */
	p = of_get_flat_dt_prop(node, "compatible", &l);

	if ((strncmp(p, "xlnx,xps-uart16550", 18) != 0) &&
		(strncmp(p, "xlnx,axi-uart16550", 18) != 0))
		return 0;

	addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
	addr += *(u32 *)of_get_flat_dt_prop(node, "reg-offset", &l);
	return be32_to_cpu(addr); /* return address */
}

コード例 #2

ファイル: fdt.c プロジェクト: adyjl/DORIMANX_LG_STOCK_LP_KERNEL

int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
				     int depth, void *data)
{
	int l;
	const char *p = NULL;
	char *cmdline = data;

	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);

	if (depth != 1 || !cmdline ||
	    (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
		return 0;

	early_init_dt_check_for_initrd(node);

	/* Put CONFIG_CMDLINE in if forced or if data had nothing in it to start */
	if (overwrite_incoming_cmdline || !cmdline[0])
		strlcpy(cmdline, config_cmdline, COMMAND_LINE_SIZE);

	/* Retrieve command line unless forcing */
	if (read_dt_cmdline)
		p = of_get_flat_dt_prop(node, "bootargs", &l);

	if (p != NULL && l > 0) {
		if (concat_cmdline) {
			int cmdline_len;
			int copy_len;
			strlcat(cmdline, " ", COMMAND_LINE_SIZE);
			cmdline_len = strlen(cmdline);
			copy_len = COMMAND_LINE_SIZE - cmdline_len - 1;
			copy_len = min((int)l, copy_len);
			strncpy(cmdline + cmdline_len, p, copy_len);
			cmdline[cmdline_len + copy_len] = '\0';
		} else {
			strlcpy(cmdline, p, min((int)l, COMMAND_LINE_SIZE));
		}
	}

	pr_debug("Command line is: %s\n", (char*)data);

	/* break now */
	return 1;
}

コード例 #3

ファイル: prom.c プロジェクト: 12rafael/jellytimekernel

/* MS this is Microblaze specifig function */
static int __init early_init_dt_scan_serial(unsigned long node,
				const char *uname, int depth, void *data)
{
	unsigned long l;
	char *p;
	int *addr;

	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);

/* find all serial nodes */
	if (strncmp(uname, "serial", 6) != 0)
		return 0;

	early_init_dt_check_for_initrd(node);

/* find compatible node with uartlite */
	p = of_get_flat_dt_prop(node, "compatible", &l);
	if ((strncmp(p, "xlnx,xps-uartlite", 17) != 0) &&
			(strncmp(p, "xlnx,opb-uartlite", 17) != 0))
		return 0;

	addr = of_get_flat_dt_prop(node, "reg", &l);
	return *addr; /* return address */
}