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authorLarry Johnson <lrj@arlinx.com>2007-12-27 11:28:51 -0500
committerStefan Roese <sr@denx.de>2007-12-27 19:35:37 +0100
commitc591dffe0cbacd896ccbad06011fe6d6afa080da (patch)
treede2642b73f3f8652df687a18e18b003330586608 /board/korat/init.S
parent87dc096829e6a6363f4fdd73653b0093a85adbe0 (diff)
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Add support for Korat PPC440EPx board
These patches add support for the PPC440EPx-based "Korat" board to U-Boot. They are based primarily on support for the Sequoia board. Signed-off-by: Larry Johnson <lrj@acm.org>
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+/*
+ *
+ * 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