Patch by Jon Loeliger, 16 Jul 2004:
- support larger DDR memories up to 2G on the PC8540/8560ADS and
STXGP3 boards
- Made MPC8540/8560ADS be 33Mhz PCI by default.
- Removed moldy CONFIG_RAM_AS_FLASH, CFG_FLASH_PORT_WIDTH_16
and CONFIG_L2_INIT_RAM options.
- Refactor Local Bus initialization out of SDRAM setup.
- Re-implement new version of LBC11/DDR11 errata workarounds.
- Moved board specific PCI init parts out of CPU directory.
- Added TLB entry for PCI-1 IO Memory
- Updated README.mpc85xxads
diff --git a/board/mpc8560ads/flash.c b/board/mpc8560ads/flash.c
index c9dfb4d..4dbbf9d 100644
--- a/board/mpc8560ads/flash.c
+++ b/board/mpc8560ads/flash.c
@@ -86,14 +86,12 @@
flash_info[0].size = size;
-#if !defined(CONFIG_RAM_AS_FLASH)
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
CFG_MONITOR_BASE+monitor_flash_len-1,
&flash_info[0]);
-#endif
#ifdef CFG_ENV_IS_IN_FLASH
/* ENV protection ON by default */
diff --git a/board/mpc8560ads/init.S b/board/mpc8560ads/init.S
index 99c4d79..242cb9f 100644
--- a/board/mpc8560ads/init.S
+++ b/board/mpc8560ads/init.S
@@ -1,26 +1,26 @@
/*
* Copyright 2004 Freescale Semiconductor.
-* Copyright (C) 2002,2003, Motorola Inc.
-* Xianghua Xiao <X.Xiao@motorola.com>
-*
-* 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
-*/
+ * Copyright (C) 2002,2003, Motorola Inc.
+ * Xianghua Xiao <X.Xiao@motorola.com>
+ *
+ * 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 <ppc_defs.h>
@@ -29,6 +29,24 @@
#include <config.h>
#include <mpc85xx.h>
+
+/*
+ * TLB0 and TLB1 Entries
+ *
+ * Out of reset, TLB1's Entry 0 maps the highest 4K for CCSRBAR.
+ * However, CCSRBAR is then relocated to CFG_CCSRBAR right after
+ * these TLB entries are established.
+ *
+ * The TLB entries for DDR are dynamically setup in spd_sdram()
+ * and use TLB1 Entries 8 through 15 as needed according to the
+ * size of DDR memory.
+ *
+ * MAS0: tlbsel, esel, nv
+ * MAS1: valid, iprot, tid, ts, tsize
+ * MAS2: epn, sharen, x0, x1, w, i, m, g, e
+ * MAS3: rpn, u0-u3, ux, sx, uw, sw, ur, sr
+ */
+
#define entry_start \
mflr r1 ; \
bl 0f ;
@@ -38,119 +56,174 @@
mtlr r1 ; \
blr ;
-/* TLB1 entries configuration: */
.section .bootpg, "ax"
.globl tlb1_entry
tlb1_entry:
entry_start
- /* Number of entries in the following table */
- .long 0x0c
-
- .long TLB1_MAS0(1,1,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(((CFG_CCSRBAR>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_CCSRBAR>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- #if defined(CFG_FLASH_PORT_WIDTH_16)
- .long TLB1_MAS0(1,2,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_4M)
- .long TLB1_MAS2(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,3,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_4M)
- .long TLB1_MAS2((((CFG_FLASH_BASE+0x400000)>>12)&0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3((((CFG_FLASH_BASE+0x400000)>>12)&0xfffff),0,0,0,0,0,1,0,1,0,1)
- #else
- .long TLB1_MAS0(1,2,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_16M)
- .long TLB1_MAS2(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_FLASH_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,3,0)
- .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(0,0,0,0,0,0,0,0,0)
- .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1)
- #endif
-
- #if !defined(CONFIG_SPD_EEPROM)
- .long TLB1_MAS0(1,4,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_64M)
- .long TLB1_MAS2(((CFG_DDR_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,0,0,0)
- .long TLB1_MAS3(((CFG_DDR_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,5,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_64M)
- .long TLB1_MAS2((((CFG_DDR_SDRAM_BASE+0x4000000)>>12) & 0xfffff),0,0,0,0,0,0,0,0)
- .long TLB1_MAS3((((CFG_DDR_SDRAM_BASE+0x4000000)>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
- #else
- .long TLB1_MAS0(1,4,0)
- .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(0,0,0,0,0,0,0,0,0)
- .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,5,0)
- .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(0,0,0,0,0,0,0,0,0)
- .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1)
- #endif
-
- .long TLB1_MAS0(1,6,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_64M)
- #if defined(CONFIG_RAM_AS_FLASH)
- .long TLB1_MAS2(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- #else
- .long TLB1_MAS2(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,0,0,0)
- #endif
- .long TLB1_MAS3(((CFG_LBC_SDRAM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,7,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_16K)
- #ifdef CONFIG_L2_INIT_RAM
- .long TLB1_MAS2(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,1,0,0,0,0)
- #else
- .long TLB1_MAS2(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,0,0,0,0,0)
- #endif
- .long TLB1_MAS3(((CFG_INIT_RAM_ADDR>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,8,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_256M)
- .long TLB1_MAS2(((CFG_PCI1_MEM_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_PCI1_MEM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,9,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_16K)
- .long TLB1_MAS2(((CFG_BCSR>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_BCSR>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
/*
- * RapidIO MMU for 512M
- * Two entries, 10 and 11
+ * Number of TLB0 and TLB1 entries in the following table
*/
- .long TLB1_MAS0(1,10,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_256M)
- .long TLB1_MAS2(((CFG_RIO_MEM_BASE>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_RIO_MEM_BASE>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
- .long TLB1_MAS0(1,11,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_256M)
- .long TLB1_MAS2(((CFG_RIO_MEM_BASE+0x10000000>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_RIO_MEM_BASE+0x10000000>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
-
+ .long 13
#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
- .long TLB1_MAS0(1,15,0)
- .long TLB1_MAS1(1,1,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(((CFG_CCSRBAR_DEFAULT>>12) & 0xfffff),0,0,0,0,1,0,1,0)
- .long TLB1_MAS3(((CFG_CCSRBAR_DEFAULT>>12) & 0xfffff),0,0,0,0,0,1,0,1,0,1)
+ /*
+ * TLB0 4K Non-cacheable, guarded
+ * 0xff700000 4K Initial CCSRBAR mapping
+ *
+ * This ends up at a TLB0 Index==0 entry, and must not collide
+ * with other TLB0 Entries.
+ */
+ .long TLB1_MAS0(0, 0, 0)
+ .long TLB1_MAS1(1, 0, 0, 0, 0)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR_DEFAULT), 0,0,0,0,0,1,0,1,0,1)
#else
- .long TLB1_MAS0(1,15,0)
- .long TLB1_MAS1(0,0,0,0,BOOKE_PAGESZ_1M)
- .long TLB1_MAS2(0,0,0,0,0,0,0,0,0)
- .long TLB1_MAS3(0,0,0,0,0,0,1,0,1,0,1)
+#error("Update the number of table entries in tlb1_entry")
#endif
+
+ /*
+ * TLB0 16K Cacheable, non-guarded
+ * 0xd001_0000 16K Temporary Global data for initialization
+ *
+ * Use four 4K TLB0 entries. These entries must be cacheable
+ * as they provide the bootstrap memory before the memory
+ * controler and real memory have been configured.
+ *
+ * These entries end up at TLB0 Indicies 0x10, 0x14, 0x18 and 0x1c,
+ * and must not collide with other TLB0 entries.
+ */
+ .long TLB1_MAS0(0, 0, 0)
+ .long TLB1_MAS1(1, 0, 0, 0, 0)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR),
+ 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR),
+ 0,0,0,0,0,1,0,1,0,1)
+
+ .long TLB1_MAS0(0, 0, 0)
+ .long TLB1_MAS1(1, 0, 0, 0, 0)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 4 * 1024),
+ 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 4 * 1024),
+ 0,0,0,0,0,1,0,1,0,1)
+
+ .long TLB1_MAS0(0, 0, 0)
+ .long TLB1_MAS1(1, 0, 0, 0, 0)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 8 * 1024),
+ 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 8 * 1024),
+ 0,0,0,0,0,1,0,1,0,1)
+
+ .long TLB1_MAS0(0, 0, 0)
+ .long TLB1_MAS1(1, 0, 0, 0, 0)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_INIT_RAM_ADDR + 12 * 1024),
+ 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_INIT_RAM_ADDR + 12 * 1024),
+ 0,0,0,0,0,1,0,1,0,1)
+
+
+ /*
+ * TLB 0: 16M Non-cacheable, guarded
+ * 0xff000000 16M FLASH
+ * Out of reset this entry is only 4K.
+ */
+ .long TLB1_MAS0(1, 0, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_FLASH_BASE), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_FLASH_BASE), 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 1: 256M Non-cacheable, guarded
+ * 0x80000000 256M PCI1 MEM First half
+ */
+ .long TLB1_MAS0(1, 1, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_PCI1_MEM_BASE), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 2: 256M Non-cacheable, guarded
+ * 0x90000000 256M PCI1 MEM Second half
+ */
+ .long TLB1_MAS0(1, 2, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_PCI1_MEM_BASE + 0x10000000),
+ 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_PCI1_MEM_BASE + 0x10000000),
+ 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 3: 256M Non-cacheable, guarded
+ * 0xc0000000 256M Rapid IO MEM First half
+ */
+ .long TLB1_MAS0(1, 3, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_RIO_MEM_BASE), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_RIO_MEM_BASE), 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 4: 256M Non-cacheable, guarded
+ * 0xd0000000 256M Rapid IO MEM Second half
+ */
+ .long TLB1_MAS0(1, 4, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_RIO_MEM_BASE + 0x10000000),
+ 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_RIO_MEM_BASE + 0x10000000),
+ 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 5: 64M Non-cacheable, guarded
+ * 0xe000_0000 1M CCSRBAR
+ * 0xe200_0000 16M PCI1 IO
+ */
+ .long TLB1_MAS0(1, 5, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_CCSRBAR), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_CCSRBAR), 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 6: 64M Cacheable, non-guarded
+ * 0xf000_0000 64M LBC SDRAM
+ */
+ .long TLB1_MAS0(1, 6, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_LBC_SDRAM_BASE), 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_LBC_SDRAM_BASE), 0,0,0,0,0,1,0,1,0,1)
+
+ /*
+ * TLB 7: 16K Non-cacheable, guarded
+ * 0xf8000000 16K BCSR registers
+ */
+ .long TLB1_MAS0(1, 7, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16K)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_BCSR), 0,0,0,0,1,0,1,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_BCSR), 0,0,0,0,0,1,0,1,0,1)
+
+#if !defined(CONFIG_SPD_EEPROM)
+ /*
+ * TLB 8, 9: 128M DDR
+ * 0x00000000 64M DDR System memory
+ * 0x04000000 64M DDR System memory
+ * Without SPD EEPROM configured DDR, this must be setup manually.
+ * Make sure the TLB count at the top of this table is correct.
+ * Likely it needs to be increased by two for these entries.
+ */
+#error("Update the number of table entries in tlb1_entry")
+ .long TLB1_MAS0(1, 8, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_DDR_SDRAM_BASE), 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_DDR_SDRAM_BASE), 0,0,0,0,0,1,0,1,0,1)
+
+ .long TLB1_MAS0(1, 9, 0)
+ .long TLB1_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long TLB1_MAS2(E500_TLB_EPN(CFG_DDR_SDRAM_BASE + 0x4000000),
+ 0,0,0,0,0,0,0,0)
+ .long TLB1_MAS3(E500_TLB_RPN(CFG_DDR_SDRAM_BASE + 0x4000000),
+ 0,0,0,0,0,1,0,1,0,1)
+#endif
+
entry_end
/*
@@ -184,13 +257,8 @@
/*
* This is not so much the SDRAM map as it is the whole localbus map.
*/
-#if !defined(CONFIG_RAM_AS_FLASH)
#define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
-#else
-#define LAWBAR2 0
-#define LAWAR2 ((LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN)
-#endif
#define LAWBAR3 ((CFG_PCI1_IO_BASE>>12) & 0xfffff)
#define LAWAR3 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_16M))
diff --git a/board/mpc8560ads/mpc8560ads.c b/board/mpc8560ads/mpc8560ads.c
index a0f6b97..ed7139d 100644
--- a/board/mpc8560ads/mpc8560ads.c
+++ b/board/mpc8560ads/mpc8560ads.c
@@ -26,6 +26,7 @@
#include <common.h>
+#include <pci.h>
#include <asm/processor.h>
#include <asm/immap_85xx.h>
#include <ioports.h>
@@ -38,6 +39,7 @@
extern long int spd_sdram(void);
+void local_bus_init(void);
void sdram_init(void);
long int fixed_sdram(void);
@@ -209,16 +211,17 @@
volatile unsigned char bcsr5;
} bcsr_t;
+
int board_early_init_f (void)
{
#if defined(CONFIG_PCI)
- volatile immap_t *immr = (immap_t *) CFG_IMMR;
- volatile ccsr_pcix_t *pci = &immr->im_pcix;
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile ccsr_pcix_t *pci = &immr->im_pcix;
- pci->peer &= 0xffffffdf; /* disable master abort */
+ pci->peer &= 0xffffffdf; /* disable master abort */
#endif
- return 0;
+ return 0;
}
void reset_phy (void)
@@ -247,6 +250,7 @@
#endif /* CONFIG_MII */
}
+
int checkboard (void)
{
puts("Board: ADS\n");
@@ -257,6 +261,12 @@
#else
printf(" PCI1: disabled\n");
#endif
+
+ /*
+ * Initialize local bus.
+ */
+ local_bus_init();
+
return 0;
}
@@ -272,15 +282,15 @@
#if defined(CONFIG_DDR_DLL)
{
- volatile ccsr_gur_t *gur= &immap->im_gur;
- uint temp_ddrdll = 0;
+ volatile ccsr_gur_t *gur= &immap->im_gur;
+ uint temp_ddrdll = 0;
- /*
- * Work around to stabilize DDR DLL
- */
- temp_ddrdll = gur->ddrdllcr;
- gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
- asm("sync;isync;msync");
+ /*
+ * Work around to stabilize DDR DLL
+ */
+ temp_ddrdll = gur->ddrdllcr;
+ gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
+ asm("sync;isync;msync");
}
#endif
@@ -308,55 +318,79 @@
/*
- * Initialize SDRAM memory on the Local Bus.
+ * Initialize Local Bus
*/
-void sdram_init (void)
+void
+local_bus_init(void)
{
-#if !defined(CONFIG_RAM_AS_FLASH)
- sys_info_t sysinfo;
- volatile immap_t *immap = (immap_t *) CFG_IMMR;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_gur_t *gur = &immap->im_gur;
volatile ccsr_lbc_t *lbc = &immap->im_lbc;
- uint *sdram_addr = (uint *) CFG_LBC_SDRAM_BASE;
- puts (" SDRAM: ");
- print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
+ uint clkdiv;
+ uint lbc_hz;
+ sys_info_t sysinfo;
/*
- * LocalBus SDRAM is not emulating flash.
- */
-
- /*
- * Fix Local Bus clock glitch. Errata LBC11.
+ * Errata LBC11.
+ * Fix Local Bus clock glitch when DLL is enabled.
*
- * If localbus freq is less than 66Mhz, use bypass mode,
- * otherwise use DLL.
- * lcrr is the local-bus clock ratio register.
+ * If localbus freq is < 66Mhz, DLL bypass mode must be used.
+ * If localbus freq is > 133Mhz, DLL can be safely enabled.
+ * Between 66 and 133, the DLL is enabled with an override workaround.
*/
- get_sys_info (&sysinfo);
- if (sysinfo.freqSystemBus / (CFG_LBC_LCRR & 0x0f) < 66000000) {
- lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff) | 0x80000000;
+
+ get_sys_info(&sysinfo);
+ clkdiv = lbc->lcrr & 0x0f;
+ lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
+
+ if (lbc_hz < 66) {
+ lbc->lcrr = CFG_LBC_LCRR | 0x80000000; /* DLL Bypass */
+
+ } else if (lbc_hz >= 133) {
+ lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */
} else {
/*
* On REV1 boards, need to change CLKDIV before enable DLL.
* Default CLKDIV is 8, change it to 4 temporarily.
*/
- volatile ccsr_gur_t *gur = &immap->im_gur;
- uint pvr = get_pvr ();
+ uint pvr = get_pvr();
uint temp_lbcdll = 0;
if (pvr == PVR_85xx_REV1) {
+ /* FIXME: Justify the high bit here. */
lbc->lcrr = 0x10000004;
}
- /* FIXME: jdl Should lcrr have 0x8000000 OR'ed in here too? */
- lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
- udelay (200);
+ lbc->lcrr = CFG_LBC_LCRR & (~0x80000000);/* DLL Enabled */
+ udelay(200);
+
+ /*
+ * Sample LBC DLL ctrl reg, upshift it to set the
+ * override bits.
+ */
temp_lbcdll = gur->lbcdllcr;
- gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16) | 0x80000000;
- asm ("sync;isync;msync");
+ gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
+ asm("sync;isync;msync");
}
+}
+
+
+/*
+ * Initialize SDRAM memory on the Local Bus.
+ */
+
+void
+sdram_init(void)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_lbc_t *lbc= &immap->im_lbc;
+ uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
+
+ puts(" SDRAM: ");
+ print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
/*
* Setup SDRAM Base and Option Registers
@@ -364,46 +398,44 @@
lbc->or2 = CFG_OR2_PRELIM;
lbc->br2 = CFG_BR2_PRELIM;
lbc->lbcr = CFG_LBC_LBCR;
- asm ("msync");
+ asm("msync");
lbc->lsrt = CFG_LBC_LSRT;
lbc->mrtpr = CFG_LBC_MRTPR;
- asm ("sync");
+ asm("sync");
/*
* Configure the SDRAM controller.
*/
lbc->lsdmr = CFG_LBC_LSDMR_1;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_2;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_3;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_4;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
lbc->lsdmr = CFG_LBC_LSDMR_5;
- asm ("sync");
+ asm("sync");
*sdram_addr = 0xff;
- ppcDcbf ((unsigned long) sdram_addr);
- udelay (100);
-
-#endif
+ ppcDcbf((unsigned long) sdram_addr);
+ udelay(100);
}
@@ -476,3 +508,41 @@
return CFG_SDRAM_SIZE * 1024 * 1024;
}
#endif /* !defined(CONFIG_SPD_EEPROM) */
+
+
+#if defined(CONFIG_PCI)
+/*
+ * Initialize PCI Devices, report devices found.
+ */
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc85xxads_config_table[] = {
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_IDSEL_NUMBER, PCI_ANY_ID,
+ pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
+ PCI_ENET0_MEMADDR,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+ } },
+ { }
+};
+#endif
+
+
+static struct pci_controller hose = {
+#ifndef CONFIG_PCI_PNP
+ config_table: pci_mpc85xxads_config_table,
+#endif
+};
+
+#endif /* CONFIG_PCI */
+
+
+void
+pci_init_board(void)
+{
+#ifdef CONFIG_PCI
+ extern void pci_mpc85xx_init(struct pci_controller *hose);
+
+ pci_mpc85xx_init(&hose);
+#endif /* CONFIG_PCI */
+}