arch/sparc64/boot.c

/*
 *
 */
#undef BOOTSTRAP
#include "config.h"
#include "libopenbios/bindings.h"
#include "arch/common/nvram.h"
#include "libc/diskio.h"
#include "libc/vsprintf.h"
#include "libopenbios/initprogram.h"
#include "libopenbios/sys_info.h"
#include "boot.h"

uint64_t kernel_image;
uint64_t kernel_size;
uint64_t initrd_image;
uint64_t initrd_size;
uint64_t qemu_cmdline;
uint64_t cmdline_size;
char *boot_device;

extern int sparc64_of_client_interface( int *params );

/* ( path len -- path len ) */

void boot(void)
{
	char *path, *param;

	/* Copy the incoming path */
	fword("2dup");
	path = pop_fstr_copy();

	/* Boot preloaded kernel */
        if (kernel_size) {
            void (*entry)(unsigned long p1, unsigned long p2, unsigned long p3,
                          unsigned long p4, unsigned long p5);

            printk("[sparc64] Kernel already loaded\n");
            entry = (void *) (unsigned long)(IMAGE_VIRT_ADDR + 0x4000);
            entry(0, 0, 0, 0, (unsigned long)&sparc64_of_client_interface);
        }

	/* Invoke Linux directly -- probably not supported */
	if(!path) {
            /* No path specified, so grab defaults from /chosen */
            push_str("bootpath");
	    push_str("/chosen");
            fword("(find-dev)");
            POP();
            fword("get-package-property");
            POP();
	    /* Update our local copy of path as well as the one on the stack */
	    fword("2dup");
            path = pop_fstr_copy();
	}

        if (path) {
            param = strchr(path, ' ');
            if(param) {
                *param = '\0';
                param++;
            } else if (cmdline_size) {
                param = (char *)qemu_cmdline;
            } else {
                push_str("boot-args");
                push_str("/options");
                fword("(find-dev)");
                POP();
                fword("get-package-property");
                POP();
                param = pop_fstr_copy();
            }

            /* Invoke platform-specific Linux loader */
            linux_load(&sys_info, path, param);

            free(path);
        }
}