diff --git a/[refs] b/[refs] index 9b92f4662169..8f03ab6c62bf 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: feb1ee759522eb67e7733fe5b59bd17420f4d2d8 +refs/heads/master: 0079fe7502b45c2dbec6d04541e637484191c393 diff --git a/trunk/arch/m68k/platform/coldfire/head.S b/trunk/arch/m68k/platform/coldfire/head.S index 49666b4dd091..38f04a3f6207 100644 --- a/trunk/arch/m68k/platform/coldfire/head.S +++ b/trunk/arch/m68k/platform/coldfire/head.S @@ -3,7 +3,7 @@ /* * head.S -- common startup code for ColdFire CPUs. * - * (C) Copyright 1999-2010, Greg Ungerer . + * (C) Copyright 1999-2011, Greg Ungerer . */ /*****************************************************************************/ @@ -13,6 +13,7 @@ #include #include #include +#include #include /*****************************************************************************/ @@ -135,6 +136,14 @@ _init_sp: __HEAD +#ifdef CONFIG_MMU +_start0: + jmp _start +.global kernel_pg_dir +.equ kernel_pg_dir,_start0 +.equ .,_start0+0x1000 +#endif + /* * This is the codes first entry point. This is where it all * begins... @@ -193,6 +202,26 @@ _start: movec %d0,%CACR nop +#ifdef CONFIG_MMU + /* + * Identity mapping for the kernel region. + */ + movel #(MMUBASE+1),%d0 /* enable MMUBAR registers */ + movec %d0,%MMUBAR + movel #MMUOR_CA,%d0 /* clear TLB entries */ + movel %d0,MMUOR + movel #0,%d0 /* set ASID to 0 */ + movec %d0,%asid + + movel #MMUCR_EN,%d0 /* Enable the identity map */ + movel %d0,MMUCR + nop /* sync i-pipeline */ + + movel #_vstart,%a0 /* jump to "virtual" space */ + jmp %a0@ +_vstart: +#endif /* CONFIG_MMU */ + #ifdef CONFIG_ROMFS_FS /* * Move ROM filesystem above bss :-) @@ -238,6 +267,22 @@ _clear_bss: lea init_thread_union,%a0 lea THREAD_SIZE(%a0),%sp +#ifdef CONFIG_MMU +.global m68k_cputype +.global m68k_mmutype +.global m68k_fputype +.global m68k_machtype + movel #CPU_COLDFIRE,%d0 + movel %d0,m68k_cputype /* Mark us as a ColdFire */ + movel #MMU_COLDFIRE,%d0 + movel %d0,m68k_mmutype + movel #FPU_COLDFIRE,%d0 + movel %d0,m68k_fputype + movel #MACH_M54XX,%d0 + movel %d0,m68k_machtype /* Mark us as a 54xx machine */ + lea init_task,%a2 /* Set "current" init task */ +#endif + /* * Assember start up done, start code proper. */