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https://gitlab.com/qemu-project/openbios.git
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f9bdcf050c
IEEE-1275 spec compliance. This patch implements the following: 1) Fix bootpath/bootargs handling so that default values are read from NVRAM, and allow multiple space-separated values to be specified. 2) With correct bootargs handling in place, move the ELF loader over to the new libopenbios unified loaders. 3) Remove all the loader code from all architecture directories sine we don't need it anymore. 4) Simplify the boot word so it invokes platform-specific code where required, then calls load and go as per the specification. Tested on all my available images for SPARC32, SPARC64 and PPC, and compile-tested on x86. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk> git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@828 f158a5a8-5612-0410-a976-696ce0be7e32
126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
/*
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*
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*/
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#undef BOOTSTRAP
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#include "config.h"
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#include "libopenbios/bindings.h"
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#include "arch/common/nvram.h"
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#include "libc/diskio.h"
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#include "libc/vsprintf.h"
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#include "libopenbios/sys_info.h"
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#include "boot.h"
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uint64_t kernel_image;
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uint64_t kernel_size;
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uint64_t qemu_cmdline;
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uint64_t cmdline_size;
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char boot_device;
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void *elf_boot_notes = NULL;
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extern int sparc64_of_client_interface( int *params );
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void go(void)
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{
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ucell address, type, size;
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int image_retval = 0;
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/* Get the entry point and the type (see forth/debugging/client.fs) */
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feval("saved-program-state >sps.entry @");
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address = POP();
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feval("saved-program-state >sps.file-type @");
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type = POP();
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feval("saved-program-state >sps.file-size @");
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size = POP();
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printk("\nJumping to entry point " FMT_ucellx " for type " FMT_ucellx "...\n", address, type);
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switch (type) {
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case 0x0:
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/* Start ELF boot image */
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image_retval = start_elf(address, (uint64_t)&elf_boot_notes);
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break;
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case 0x1:
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/* Start ELF image */
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image_retval = start_client_image(address, (uint64_t)&sparc64_of_client_interface);
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break;
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case 0x5:
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/* Start a.out image */
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image_retval = start_client_image(address, (uint64_t)&sparc64_of_client_interface);
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break;
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case 0x10:
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/* Start Fcode image */
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printk("Evaluating FCode...\n");
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PUSH(address);
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PUSH(1);
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fword("byte-load");
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image_retval = 0;
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break;
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case 0x11:
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/* Start Forth image */
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PUSH(address);
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PUSH(size);
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fword("eval2");
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image_retval = 0;
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break;
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}
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printk("Image returned with return value %#x\n", image_retval);
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}
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void boot(void)
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{
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char *path, *param;
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/* Copy the incoming path */
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fword("2dup");
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path = pop_fstr_copy();
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/* Boot preloaded kernel */
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if (kernel_size) {
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void (*entry)(unsigned long p1, unsigned long p2, unsigned long p3,
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unsigned long p4, unsigned long p5);
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printk("[sparc64] Kernel already loaded\n");
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entry = (void *) (unsigned long)kernel_image;
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entry(0, 0, 0, 0, (unsigned long)&sparc64_of_client_interface);
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}
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/* Invoke Linux directly -- probably not supported */
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if(!path) {
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/* No path specified, so grab defaults from /chosen */
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push_str("bootpath");
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push_str("/chosen");
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fword("(find-dev)");
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POP();
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fword("get-package-property");
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POP();
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path = pop_fstr_copy();
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}
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param = strchr(path, ' ');
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if(param) {
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*param = '\0';
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param++;
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} else if (cmdline_size) {
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param = (char *)qemu_cmdline;
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} else {
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push_str("boot-args");
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push_str("/options");
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fword("(find-dev)");
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POP();
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fword("get-package-property");
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POP();
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param = pop_fstr_copy();
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}
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/* Invoke platform-specific Linux loader */
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linux_load(&sys_info, path, param);
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free(path);
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}
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