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Test all MMU types, more processor type specific code

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This commit is contained in:
Laurent Vivier 2005-05-12 05:48:27 +00:00
parent 1e2b50db64
commit b990716081
1 changed files with 89 additions and 54 deletions
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143
second/main.c
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@ -13,7 +13,12 @@
#include "bank.h" #include "bank.h"
#include "memory.h" #include "memory.h"
#include "uncompress.h" #include "uncompress.h"
#ifdef ARCH_M68K
#include "bootinfo.h" #include "bootinfo.h"
#endif
#ifdef ARCH_PPC
#include "bootx.h"
#endif
#include "arch.h" #include "arch.h"
#include "misc.h" #include "misc.h"
#include "glue.h" #include "glue.h"
@ -35,7 +40,6 @@ extern void MMU040_disable_cache(void);
#ifdef ARCH_PPC #ifdef ARCH_PPC
extern void enter_kernelPPC(unsigned long addr, unsigned long size, unsigned long dest); extern void enter_kernelPPC(unsigned long addr, unsigned long size, unsigned long dest);
extern char end_enter_kernelPPC; extern char end_enter_kernelPPC;
extern void PPC_disable_cache(void);
#endif #endif
#define PAGE_SHIFT 12 #define PAGE_SHIFT 12
@ -50,7 +54,9 @@ int start(emile_l2_header_t* info)
char * kernel; char * kernel;
unsigned long physImage; unsigned long physImage;
entry_t entry; entry_t entry;
#ifdef ARCH_M68K
disable_cache_t disable_cache; disable_cache_t disable_cache;
#endif
int ret; int ret;
unsigned long start_mem; unsigned long start_mem;
unsigned long aligned_size; unsigned long aligned_size;
@ -93,23 +99,38 @@ int start(emile_l2_header_t* info)
/* where is mapped my boot function ? */ /* where is mapped my boot function ? */
#ifdef ARCH_M68K #ifdef ARCH_M68K
if (mmu_type == gestalt68040MMU) if (arch_type == gestalt68k)
{ {
enter_kernel = (unsigned long)enter_kernel040; if (mmu_type == gestalt68040MMU)
end_enter_kernel = (unsigned long)&end_enter_kernel040; {
disable_cache = MMU040_disable_cache; enter_kernel = (unsigned long)enter_kernel040;
} end_enter_kernel = (unsigned long)&end_enter_kernel040;
else disable_cache = MMU040_disable_cache;
{ }
enter_kernel = (unsigned long)enter_kernel030; else if (mmu_type == gestalt68030MMU)
end_enter_kernel = (unsigned long)&end_enter_kernel030; {
disable_cache = MMU030_disable_cache; enter_kernel = (unsigned long)enter_kernel030;
end_enter_kernel = (unsigned long)&end_enter_kernel030;
disable_cache = MMU030_disable_cache;
}
else if (mmu_type == gestalt68851)
{
error("MMU 68851 is not supported");
}
else if (mmu_type == gestaltNoMMU)
{
error("CPU without MMU is not supported");
}
else
error("Unknown MMU");
} }
#endif #endif
#ifdef ARCH_PPC #ifdef ARCH_PPC
enter_kernel = (unsigned long)enter_kernelPPC; if (arch_type == gestaltPowerPC)
end_enter_kernel = (unsigned long)&end_enter_kernelPPC; {
disable_cache = PPC_disable_cache; enter_kernel = (unsigned long)enter_kernelPPC;
end_enter_kernel = (unsigned long)&end_enter_kernelPPC;
}
#endif #endif
/* load kernel */ /* load kernel */
@ -219,54 +240,68 @@ int start(emile_l2_header_t* info)
printf("no RAMDISK\n"); printf("no RAMDISK\n");
} }
#ifdef ARCH_M68K
ret = logical2physical((unsigned long)kernel, &physImage); ret = logical2physical((unsigned long)kernel, &physImage);
/* disable and flush cache */ if (arch_type == gestalt68k)
disable_cache();
/* initialize bootinfo structure */
bootinfo_init(info->command_line,
(char*)ramdisk_start, info->ramdisk_size);
/* compute final address of kernel */
aligned_size = boot_info.memory[0].addr & (KERNEL_ALIGN - 1);
if ( aligned_size > 0 )
{ {
aligned_size = KERNEL_ALIGN - aligned_size; /* disable and flush cache */
aligned_addr = boot_info.memory[0].addr + aligned_size;
aligned_size = boot_info.memory[0].size - aligned_size; disable_cache();
boot_info.memory[0].addr = aligned_addr;
boot_info.memory[0].size = aligned_size; /* initialize bootinfo structure */
bootinfo_init(info->command_line,
(char*)ramdisk_start, info->ramdisk_size);
/* compute final address of kernel */
aligned_size = boot_info.memory[0].addr & (KERNEL_ALIGN - 1);
if ( aligned_size > 0 )
{
aligned_size = KERNEL_ALIGN - aligned_size;
aligned_addr = boot_info.memory[0].addr + aligned_size;
aligned_size = boot_info.memory[0].size - aligned_size;
boot_info.memory[0].addr = aligned_addr;
boot_info.memory[0].size = aligned_size;
}
/* set bootinfo at end of kernel image */
set_kernel_bootinfo(kernel + uncompressed_size);
start_mem = boot_info.memory[0].addr + PAGE_SIZE;
ret = logical2physical(enter_kernel, (unsigned long*)&entry);
if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
{
unsigned long logi;
unsigned long size = end_enter_kernel - enter_kernel;
logi = vga_get_video();
ret = logical2physical(logi, (unsigned long*)&entry);
memcpy((char*)logi, (char*)enter_kernel, size);
memcpy((char*)entry, (char*)enter_kernel, size);
}
} }
#endif /* ARCH_M68K */
/* set bootinfo at end of kernel image */ #ifdef ARCH_PPC
if (arch_type == gestaltPowerPC)
set_kernel_bootinfo(kernel + uncompressed_size); {
bootx_init(info->command_line,
start_mem = boot_info.memory[0].addr + PAGE_SIZE; (char*)ramdisk_start, info->ramdisk_size);
physImage = kernel;
start_mem = 0x200000;
}
#endif
printf("\n"); printf("\n");
printf("Physical address of kernel will be 0x%08lx\n", start_mem); printf("Physical address of kernel will be 0x%08lx\n",
start_mem);
printf("Ok, booting the kernel.\n"); printf("Ok, booting the kernel.\n");
ret = logical2physical(enter_kernel, (unsigned long*)&entry);
if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
{
unsigned long logi;
unsigned long size = end_enter_kernel - enter_kernel;
logi = vga_get_video();
ret = logical2physical(logi, (unsigned long*)&entry);
memcpy((char*)logi, (char*)enter_kernel, size);
memcpy((char*)entry, (char*)enter_kernel, size);
}
/* disable interrupt */ /* disable interrupt */
asm("ori.w #0x0700,%sr"); asm("ori.w #0x0700,%sr");