diff --git a/second/main.c b/second/main.c index 7f26843..e4c97da 100644 --- a/second/main.c +++ b/second/main.c @@ -31,6 +31,9 @@ typedef void (*entry_t) (unsigned long , unsigned long , unsigned long ); typedef void (*disable_cache_t) (void); +extern void enter_kernelnoMMU(unsigned long addr, unsigned long size, unsigned long dest); +extern char end_enter_kernelnoMMU; +extern void noMMU_disable_cache(void); extern void enter_kernel030(unsigned long addr, unsigned long size, unsigned long dest); extern char end_enter_kernel030; extern void MMU030_disable_cache(void); @@ -70,9 +73,12 @@ int start(emile_l2_header_t* info) unsigned long kernel_image_start; unsigned long ramdisk_start; int uncompressed_size; + int bootstrap_size; printf("Early Macintosh Image LoadEr"); -#if defined(ARCH_M68K) +#if defined(ARCH_M68K) && defined(ARCH_PPC) + printf(" (mixed mode)\n"); +#elif defined(ARCH_M68K) printf(" for Motorola 680x0\n"); #elif defined(ARCH_PPC) printf(" for PowerPC\n"); @@ -107,12 +113,14 @@ int start(emile_l2_header_t* info) { if (mmu_type == gestalt68040MMU) { + printf("Using 68040 MMU\n"); enter_kernel = (unsigned long)enter_kernel040; end_enter_kernel = (unsigned long)&end_enter_kernel040; disable_cache = MMU040_disable_cache; } else if (mmu_type == gestalt68030MMU) { + printf("Using 68030 MMU\n"); enter_kernel = (unsigned long)enter_kernel030; end_enter_kernel = (unsigned long)&end_enter_kernel030; disable_cache = MMU030_disable_cache; @@ -123,10 +131,18 @@ int start(emile_l2_header_t* info) } else if (mmu_type == gestaltNoMMU) { - error("CPU without MMU is not supported"); + printf("No MMU detected\n"); + enter_kernel = (unsigned long)enter_kernelnoMMU; + end_enter_kernel = (unsigned long)&end_enter_kernelnoMMU; + disable_cache = noMMU_disable_cache; } else error("Unknown MMU"); + + /* and BI_ALLOC_SIZE for bootinfo */ + + bootstrap_size = BI_ALLOC_SIZE + + end_enter_kernel - enter_kernel; } else #ifndef ARCH_PPC @@ -134,7 +150,14 @@ int start(emile_l2_header_t* info) #endif #endif #ifdef ARCH_PPC - if (arch_type != gestaltPowerPC) + if (arch_type == gestaltPowerPC) + { + enter_kernel = NULL; + end_enter_kernel = NULL; + disable_cache = NULL; + bootstrap_size = 0; + } + else error("EMILE doesn't support your architecture"); #endif @@ -150,11 +173,8 @@ int start(emile_l2_header_t* info) if (info->kernel_size == 0) /* means uncompressed */ kernel_image_start = (unsigned long)malloc_contiguous( - info->kernel_image_size + 4 -#ifdef ARCH_M68K - + BI_ALLOC_SIZE + - end_enter_kernel - enter_kernel -#endif + info->kernel_image_size + 4 + + bootstrap_size ); else kernel_image_start = (unsigned long)malloc( @@ -186,16 +206,9 @@ int start(emile_l2_header_t* info) } else { - /* add KERNEL_ALIGN if we have to align - * and BI_ALLOC_SIZE for bootinfo - */ - printf("Allocating %d bytes for kernel\n", info->kernel_size); - kernel = (char*)malloc_contiguous(info->kernel_size + 4 -#ifdef ARCH_M68K - + BI_ALLOC_SIZE + - end_enter_kernel - enter_kernel -#endif + kernel = (char*)malloc_contiguous(info->kernel_size + 4 + + bootstrap_size ); if (kernel == 0) { @@ -218,15 +231,18 @@ int start(emile_l2_header_t* info) error("Kernel between two banks, contact maintainer\n"); #ifdef ARCH_M68K - /* copy enter_kernel at end of kernel */ + if (arch_type == gestalt68k) + { + /* copy enter_kernel at end of kernel */ - memcpy((char*)kernel + uncompressed_size + BI_ALLOC_SIZE, - (char*)enter_kernel, end_enter_kernel - enter_kernel); + memcpy((char*)kernel + uncompressed_size + BI_ALLOC_SIZE, + (char*)enter_kernel, end_enter_kernel - enter_kernel); - end_enter_kernel = (unsigned long)kernel + uncompressed_size + end_enter_kernel = (unsigned long)kernel + uncompressed_size + BI_ALLOC_SIZE + (end_enter_kernel - enter_kernel); - enter_kernel = (unsigned long)kernel + BI_ALLOC_SIZE - + uncompressed_size; + enter_kernel = (unsigned long)kernel + BI_ALLOC_SIZE + + uncompressed_size; + } #endif /* load ramdisk if needed */ @@ -270,6 +286,8 @@ int start(emile_l2_header_t* info) /* compute final address of kernel */ + /* add KERNEL_ALIGN if we have to align */ + aligned_size = boot_info.memory[0].addr & (KERNEL_ALIGN - 1); if ( aligned_size > 0 ) {