void __init setup_arch(char **cmdline_p) { #ifdef CONFIG_ARC_UBOOT_SUPPORT /* make sure that uboot passed pointer to cmdline/dtb is valid */ if (uboot_tag && is_kernel((unsigned long)uboot_arg)) panic("Invalid uboot arg\n"); /* See if u-boot passed an external Device Tree blob */ machine_desc = setup_machine_fdt(uboot_arg); /* uboot_tag == 2 */ if (!machine_desc) #endif { /* No, so try the embedded one */ machine_desc = setup_machine_fdt(__dtb_start); if (!machine_desc) panic("Embedded DT invalid\n"); /* * If we are here, it is established that @uboot_arg didn't * point to DT blob. Instead if u-boot says it is cmdline, * append to embedded DT cmdline. * setup_machine_fdt() would have populated @boot_command_line */ if (uboot_tag == 1) { /* Ensure a whitespace between the 2 cmdlines */ strlcat(boot_command_line, " ", COMMAND_LINE_SIZE); strlcat(boot_command_line, uboot_arg, COMMAND_LINE_SIZE); } } /* Save unparsed command line copy for /proc/cmdline */ *cmdline_p = boot_command_line; /* To force early parsing of things like mem=xxx */ parse_early_param(); /* Platform/board specific: e.g. early console registration */ if (machine_desc->init_early) machine_desc->init_early(); smp_init_cpus(); setup_processor(); setup_arch_memory(); /* copy flat DT out of .init and then unflatten it */ unflatten_and_copy_device_tree(); /* Can be issue if someone passes cmd line arg "ro" * But that is unlikely so keeping it as it is */ root_mountflags &= ~MS_RDONLY; #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif arc_unwind_init(); }
void __init setup_arch(char **cmdline_p) { handle_uboot_args(); /* Save unparsed command line copy for /proc/cmdline */ *cmdline_p = boot_command_line; /* To force early parsing of things like mem=xxx */ parse_early_param(); /* Platform/board specific: e.g. early console registration */ if (machine_desc->init_early) machine_desc->init_early(); smp_init_cpus(); setup_processor(); setup_arch_memory(); /* copy flat DT out of .init and then unflatten it */ unflatten_and_copy_device_tree(); /* Can be issue if someone passes cmd line arg "ro" * But that is unlikely so keeping it as it is */ root_mountflags &= ~MS_RDONLY; #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif arc_unwind_init(); }
void __init setup_arch(char **cmdline_p) { /* This also populates @boot_command_line from /bootargs */ machine_desc = setup_machine_fdt(__dtb_start); if (!machine_desc) panic("Embedded DT invalid\n"); /* Append any u-boot provided cmdline */ #ifdef CONFIG_CMDLINE_UBOOT /* Add a whitespace seperator between the 2 cmdlines */ strlcat(boot_command_line, " ", COMMAND_LINE_SIZE); strlcat(boot_command_line, command_line, COMMAND_LINE_SIZE); #endif /* Save unparsed command line copy for /proc/cmdline */ *cmdline_p = boot_command_line; /* To force early parsing of things like mem=xxx */ parse_early_param(); /* Platform/board specific: e.g. early console registration */ if (machine_desc->init_early) machine_desc->init_early(); setup_processor(); #ifdef CONFIG_SMP smp_init_cpus(); #endif setup_arch_memory(); /* copy flat DT out of .init and then unflatten it */ copy_devtree(); unflatten_device_tree(); /* Can be issue if someone passes cmd line arg "ro" * But that is unlikely so keeping it as it is */ root_mountflags &= ~MS_RDONLY; console_verbose(); #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif arc_unwind_init(); arc_unwind_setup(); }