Remove LBC_CACHE_BASE from 8544 DS

The 8544 DS doesn't have any cacheable Local Bus memories set up.  By mapping
space for some anyway, we were allowing speculative loads into unmapped space,
which would cause an exception (annoying, even if ultimately harmless).
Removing LBC_CACHE_BASE, and using LBC_NONCACHE_BASE for the LBC LAW solves the
problem.

Signed-off-by: Andy Fleming <afleming@freescale.com>

board/freescale/mpc8544ds/law.c

@@ -30,7 +30,7 @@
 struct law_entry law_table[] = {
 	SET_LAW(CFG_PCI1_MEM_PHYS, LAW_SIZE_512M, LAW_TRGT_IF_PCI),
 	SET_LAW(CFG_PCI1_IO_PHYS, LAW_SIZE_64K, LAW_TRGT_IF_PCI),
-	SET_LAW(CFG_LBC_CACHE_BASE, LAWAR_SIZE_256M, LAW_TRGT_IF_LBC),
+	SET_LAW(CFG_LBC_NONCACHE_BASE, LAWAR_SIZE_128M, LAW_TRGT_IF_LBC),
 	SET_LAW(CFG_PCIE1_MEM_PHYS, LAWAR_SIZE_256M, LAW_TRGT_IF_PCIE_1),
 	SET_LAW(CFG_PCIE1_IO_PHYS, LAW_SIZE_64K, LAW_TRGT_IF_PCIE_1),
 	SET_LAW(CFG_PCIE2_MEM_PHYS, LAWAR_SIZE_512M, LAW_TRGT_IF_PCIE_2),

board/freescale/mpc8544ds/tlb.c

@@ -79,21 +79,13 @@ struct fsl_e_tlb_entry tlb_table[] = {
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 4, BOOKE_PAGESZ_64M, 1),
 
-#ifdef CFG_LBC_CACHE_BASE
 	/*
-	 * TLB 5:	64M	Cacheable, non-guarded
-	 */
-	SET_TLB_ENTRY(1, CFG_LBC_CACHE_BASE, CFG_LBC_CACHE_BASE,
-		      MAS3_SX|MAS3_SW|MAS3_SR, 0,
-		      0, 5, BOOKE_PAGESZ_64M, 1),
-#endif
-	/*
-	 * TLB 6:	64M	Non-cacheable, guarded
+	 * TLB 5:	64M	Non-cacheable, guarded
 	 * 0xf8000000	64M	PIXIS 0xF8000000 - 0xFBFFFFFF
 	 */
 	SET_TLB_ENTRY(1, CFG_LBC_NONCACHE_BASE, CFG_LBC_NONCACHE_BASE,
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
-		      0, 6, BOOKE_PAGESZ_64M, 1),
+		      0, 5, BOOKE_PAGESZ_64M, 1),
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);

include/configs/MPC8544DS.h

@@ -148,8 +148,6 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
  */
 #define CFG_BOOT_BLOCK		0xfc000000	/* boot TLB */
 
-#define CFG_LBC_CACHE_BASE	0xf0000000	/* Localbus cacheable */
-
 #define CFG_FLASH_BASE		0xff800000	/* start of FLASH 8M */
 
 #define CFG_BR0_PRELIM		0xff801001