Macintosh-SW/EMILE
1
0
Fork 0
mirror of https://github.com/vivier/EMILE.git synced 2025-04-01 18:33:33 +00:00
Code Issues Projects Releases Wiki Activity

Pass first level parameter in a structure

Browse Source
This commit is contained in:
Laurent Vivier 2004-06-04 22:29:43 +00:00
parent 68b803a4ab
commit ecfa5bf4a9
2 changed files with 39 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
second/head.S
View File

@ -20,27 +20,18 @@ _start:
*
***************************************************************************/
.align 4
/* Header Signature */
.dc.b 'E','M','0','1'
_kernel_image_offset:
.long 0
_kernel_image_size:
.long 0
_kernel_size:
.long 0
_ramdisk_offset:
.long 0
_ramdisk_size:
.long 0
_command_line:
.skip cmdline_length, 0
_kernel_image_offset: .long 0
_kernel_image_size: .long 0
_kernel_size: .long 0
_ramdisk_offset: .long 0
_ramdisk_size: .long 0
_command_line: .skip cmdline_length, 0
.align 4
setup:
@ -54,13 +45,8 @@ setup:
/* begin to work */
lea _command_line(%pc), %a0
lea _kernel_image_offset(%pc), %a0
move.l %a0, -(%sp)
move.l _ramdisk_size(%pc), -(%sp)
move.l _ramdisk_offset(%pc), -(%sp)
move.l _kernel_size(%pc), -(%sp)
move.l _kernel_image_size(%pc), -(%sp)
move.l _kernel_image_offset(%pc), -(%sp)
bsr start@PLTPC
/* We guess to never come here */

47
second/main.c
View File

@ -33,8 +33,16 @@ extern char end_enter_kernel040;
#define BI_ALLOC_SIZE (4096L) // Allocate 4K for bootinfo
#define KERNEL_ALIGN (256L * 1024L) // Kernel alignment, on 256K boundary
int start(long kernel_image_offset, long kernel_image_size, long kernel_size,
long ramdisk_offset, long ramdisk_size, char* command_line)
struct first_level_info {
unsigned long kernel_image_offset;
unsigned long kernel_image_size;
unsigned long kernel_size;
unsigned long ramdisk_offset;
unsigned long ramdisk_size;
char command_line[CL_SIZE];
};
int start(struct first_level_info* info)
{
#ifdef TARGET_M68K
char * kernel;
@ -59,15 +67,19 @@ int start(long kernel_image_offset, long kernel_image_size, long kernel_size,
init_memory_map();
#ifdef BANK_DUMP
bank_dump();
#endif
/* load kernel */
printf("vmlinux %s\n", command_line);
printf("vmlinux %s\n", info->command_line);
printf("Loading kernel...\n");
kernel_image_start = (unsigned long)load_image(
(unsigned long)kernel_image_offset,
kernel_image_size);
(unsigned long)info->kernel_image_offset,
info->kernel_image_size);
printf("Kernel image loaded at 0x%lx\n", kernel_image_start);
printf("Kernel image size is %ld Bytes\n", kernel_image_size);
printf("Kernel image size is %ld Bytes\n", info->kernel_image_size);
#ifdef TARGET_PPC
@ -92,20 +104,20 @@ int start(long kernel_image_offset, long kernel_image_size, long kernel_size,
printf("Available Memory: %ld kB\n", bank_mem_avail() / 1024);
if (kernel_image_size != 0)
if (info->kernel_image_size != 0)
{
if (kernel_size == 0)
kernel_size = kernel_image_size * 3;
if (info->kernel_size == 0)
info->kernel_size = info->kernel_image_size * 3;
/* add KERNEL_ALIGN if we have to align
* and BI_ALLOC_SIZE for bootinfo
*/
printf("Allocating %ld bytes for kernel\n", kernel_size);
kernel = (char*)malloc(kernel_size + 4 + BI_ALLOC_SIZE);
printf("Allocating %ld bytes for kernel\n", info->kernel_size);
kernel = (char*)malloc(info->kernel_size + 4 + BI_ALLOC_SIZE);
if (kernel == 0)
{
printf("cannot allocate %ld bytes\n", kernel_size);
printf("cannot allocate %ld bytes\n", info->kernel_size);
while(1);
}
@ -126,14 +138,14 @@ int start(long kernel_image_offset, long kernel_image_size, long kernel_size,
/* load ramdisk if needed */
if (ramdisk_size != 0)
if (info->ramdisk_size != 0)
{
printf("Loading RAMDISK...\n");
ramdisk_start = (unsigned long)load_image(
(unsigned long)ramdisk_offset,
ramdisk_size);
(unsigned long)info->ramdisk_offset,
info->ramdisk_size);
printf("RAMDISK loaded at 0x%lx\n", ramdisk_start);
printf("RAMDISK size is %ld Bytes\n", ramdisk_size);
printf("RAMDISK size is %ld Bytes\n", info->ramdisk_size);
}
else
{
@ -145,7 +157,8 @@ int start(long kernel_image_offset, long kernel_image_size, long kernel_size,
/* initialize bootinfo structure */
bootinfo_init(command_line, (char*)ramdisk_start, ramdisk_size);
bootinfo_init(info->command_line,
(char*)ramdisk_start, info->ramdisk_size);
/* compute final address of kernel */