summaryrefslogtreecommitdiff
path: root/board/freescale/mpc8540ads/init.S
diff options
context:
space:
mode:
authorPeter Pearse <peter.pearse@arm.com>2008-01-07 15:34:22 +0000
committerPeter Pearse <peter.pearse@arm.com>2008-01-07 15:34:22 +0000
commit4985ca5af3767ffe13ea96e1dc26f88c81084414 (patch)
tree94db0464d5c7c643816dd3b4e823343496c2ed96 /board/freescale/mpc8540ads/init.S
parent2ae64f5135e51bb18753884d1265b99e89b5aedd (diff)
parent5c740711f0ea5b51414b341b71597c4a0751be74 (diff)
downloadu-boot-imx-4985ca5af3767ffe13ea96e1dc26f88c81084414.zip
u-boot-imx-4985ca5af3767ffe13ea96e1dc26f88c81084414.tar.gz
u-boot-imx-4985ca5af3767ffe13ea96e1dc26f88c81084414.tar.bz2
Merge with git://www.denx.de/git/u-boot.git
Diffstat (limited to 'board/freescale/mpc8540ads/init.S')
-rw-r--r--board/freescale/mpc8540ads/init.S280
1 files changed, 280 insertions, 0 deletions
diff --git a/board/freescale/mpc8540ads/init.S b/board/freescale/mpc8540ads/init.S
new file mode 100644
index 0000000..544fde9
--- /dev/null
+++ b/board/freescale/mpc8540ads/init.S
@@ -0,0 +1,280 @@
+/*
+ * 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
+ */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+#include <asm/cache.h>
+#include <asm/mmu.h>
+#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 ;
+
+#define entry_end \
+0: mflr r0 ; \
+ mtlr r1 ; \
+ blr ;
+
+
+ .section .bootpg, "ax"
+ .globl tlb1_entry
+tlb1_entry:
+ entry_start
+
+ /*
+ * Number of TLB0 and TLB1 entries in the following table
+ */
+ .long 13
+
+#if (CFG_CCSRBAR_DEFAULT != CFG_CCSRBAR)
+ /*
+ * 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
+#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
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000 0x7fff_ffff DDR 2G
+ * 0x8000_0000 0x9fff_ffff PCI1 MEM 512M
+ * 0xc000_0000 0xdfff_ffff RapidIO 512M
+ * 0xe000_0000 0xe000_ffff CCSR 1M
+ * 0xe200_0000 0xe2ff_ffff PCI1 IO 16M
+ * 0xf000_0000 0xf7ff_ffff SDRAM 128M
+ * 0xf800_0000 0xf80f_ffff BCSR 1M
+ * 0xff00_0000 0xffff_ffff FLASH (boot bank) 16M
+ *
+ * Notes:
+ * CCSRBAR and L2-as-SRAM don't need a configured Local Access Window.
+ * If flash is 8M at default position (last 8M), no LAW needed.
+ */
+
+#if !defined(CONFIG_SPD_EEPROM)
+#define LAWBAR0 ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff)
+#define LAWAR0 (LAWAR_EN | LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M))
+#else
+#define LAWBAR0 0
+#define LAWAR0 ((LAWAR_TRGT_IF_DDR | (LAWAR_SIZE & LAWAR_SIZE_128M)) & ~LAWAR_EN)
+#endif
+
+#define LAWBAR1 ((CFG_PCI1_MEM_BASE>>12) & 0xfffff)
+#define LAWAR1 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_512M))
+
+/*
+ * This is not so much the SDRAM map as it is the whole localbus map.
+ */
+#define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
+#define LAWAR2 (LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
+
+#define LAWBAR3 ((CFG_PCI1_IO_PHYS>>12) & 0xfffff)
+#define LAWAR3 (LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_1M))
+
+/*
+ * Rapid IO at 0xc000_0000 for 512 M
+ */
+#define LAWBAR4 ((CFG_RIO_MEM_BASE>>12) & 0xfffff)
+#define LAWAR4 (LAWAR_EN | LAWAR_TRGT_IF_RIO | (LAWAR_SIZE & LAWAR_SIZE_512M))
+
+
+ .section .bootpg, "ax"
+ .globl law_entry
+law_entry:
+ entry_start
+ .long 0x05
+ .long LAWBAR0,LAWAR0,LAWBAR1,LAWAR1,LAWBAR2,LAWAR2,LAWBAR3,LAWAR3
+ .long LAWBAR4,LAWAR4
+ entry_end