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Diffstat (limited to 'board/korat/init.S')
| -rw-r--r-- | board/korat/init.S | 80 | 
1 files changed, 80 insertions, 0 deletions
diff --git a/board/korat/init.S b/board/korat/init.S new file mode 100644 index 000000000..bd0e8b4da --- /dev/null +++ b/board/korat/init.S @@ -0,0 +1,80 @@ +/* + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <ppc_asm.tmpl> +#include <asm-ppc/mmu.h> +#include <config.h> + +/************************************************************************** + * TLB TABLE + * + * This table is used by the cpu boot code to setup the initial tlb + * entries. Rather than make broad assumptions in the cpu source tree, + * this table lets each board set things up however they like. + * + *  Pointer to the table is returned in r1 + * + *************************************************************************/ +    .section .bootpg,"ax" +    .globl tlbtab + +tlbtab: +	tlbtab_start + +	/* +	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the +	 * speed up boot process. It is patched after relocation to enable SA_I +	 */ +	tlbentry( CFG_BOOT_BASE_ADDR, SZ_256M, CFG_BOOT_BASE_ADDR, 1, AC_R|AC_W|AC_X|SA_G ) + +	/* +	 * TLB entries for SDRAM are not needed on this platform.  They are +	 * generated dynamically in the SPD DDR2 detection routine. +	 */ + +#ifdef CFG_INIT_RAM_DCACHE +	/* TLB-entry for init-ram in dcache (SA_I must be turned off!) */ +	tlbentry( CFG_INIT_RAM_ADDR, SZ_64K, CFG_INIT_RAM_ADDR, 0, AC_R|AC_W|AC_X|SA_G ) +#endif + +	/* TLB-entry for PCI Memory */ +	tlbentry( CFG_PCI_MEMBASE, SZ_256M, CFG_PCI_MEMBASE, 1, AC_R|AC_W|SA_G|SA_I ) +	tlbentry( CFG_PCI_MEMBASE1, SZ_256M, CFG_PCI_MEMBASE1, 1, AC_R|AC_W|SA_G|SA_I ) +	tlbentry( CFG_PCI_MEMBASE2, SZ_256M, CFG_PCI_MEMBASE2, 1, AC_R|AC_W|SA_G|SA_I ) +	tlbentry( CFG_PCI_MEMBASE3, SZ_256M, CFG_PCI_MEMBASE3, 1, AC_R|AC_W|SA_G|SA_I ) + +	/* TLB-entry for EBC */ +	tlbentry( CFG_CPLD_BASE, SZ_1K, CFG_CPLD_BASE, 1, AC_R|AC_W|SA_G|SA_I ) + +	/* TLB-entry for Internal Registers & OCM */ +	/* I wonder why this must be executable -- lrj@acm.org 2007-10-08 */ +	tlbentry( 0xE0000000, SZ_16M, 0xE0000000, 0,  AC_R|AC_W|AC_X|SA_I ) + +	/*TLB-entry PCI registers*/ +	tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1,  AC_R|AC_W|SA_G|SA_I ) + +	/* TLB-entry for peripherals */ +	tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_R|AC_W|SA_G|SA_I) + +	/* TLB-entry PCI IO Space - from sr@denx.de */ +	tlbentry(0xE8000000, SZ_64K, 0xE8000000, 1, AC_R|AC_W|SA_G|SA_I) + +	tlbtab_end  |