ppc4xx: Updates to Korat-specific code
This patch contains updates for changes for the Korat PPC440EPx board.
These changes include:
(1) Support for "permanent" and "upgradable" copies of U-Boot, as
described in the new "doc/README.korat" file;
(2) a new memory map for the registers in the board's CPLD;
(3) a revised format for manufacturer's data in serial EEPROM; and
(4) changes to track updates to U-Boot for the Sequoia board.
Signed-off-by: Larry Johnson <lrj@acm.org>
diff --git a/board/korat/init.S b/board/korat/init.S
index bd0e8b4..bf8b2c8 100644
--- a/board/korat/init.S
+++ b/board/korat/init.S
@@ -43,7 +43,7 @@
* 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 )
+ tlbentry( 0xF0000000, SZ_256M, 0xF0000000, 1, AC_R|AC_W|AC_X|SA_G )
/*
* TLB entries for SDRAM are not needed on this platform. They are
@@ -52,24 +52,32 @@
#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 )
+ 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 )
+ tlbentry( CFG_PCI_MEMBASE + 0x00000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x00000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x10000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x10000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x20000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x20000000, 1, AC_R|AC_W|SA_G|SA_I )
+
+ tlbentry( CFG_PCI_MEMBASE + 0x30000000, SZ_256M,
+ CFG_PCI_MEMBASE + 0x30000000, 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 )
+ 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 )
+ 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)
@@ -78,3 +86,10 @@
tlbentry(0xE8000000, SZ_64K, 0xE8000000, 1, AC_R|AC_W|SA_G|SA_I)
tlbtab_end
+
+#if defined(CONFIG_KORAT_PERMANENT)
+ .globl korat_branch_absolute
+korat_branch_absolute:
+ mtlr r3
+ blr
+#endif