summaryrefslogtreecommitdiff
path: root/board/atum8548/init.S
diff options
context:
space:
mode:
Diffstat (limited to 'board/atum8548/init.S')
-rw-r--r--board/atum8548/init.S235
1 files changed, 235 insertions, 0 deletions
diff --git a/board/atum8548/init.S b/board/atum8548/init.S
new file mode 100644
index 0000000..a410e2e
--- /dev/null
+++ b/board/atum8548/init.S
@@ -0,0 +1,235 @@
+/*
+ * Copyright 2007
+ * Robert Lazarski, Instituto Atlantico, robertlazarski@gmail.com
+ * Copyright 2004, 2007 Freescale Semiconductor.
+ * Copyright 2002,2003, Motorola Inc.
+ *
+ * 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>
+
+#define LAWAR_TRGT_PCI1 0x00000000
+#define LAWAR_TRGT_PCI2 0x00100000
+#define LAWAR_TRGT_PCIE 0x00200000
+#define LAWAR_TRGT_DDR 0x00f00000
+
+/*
+ * 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, 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 (2f-1f)/16
+
+1:
+#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 FSL_BOOKE_MAS0(0, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+ .long FSL_BOOKE_MAS2(CFG_CCSRBAR_DEFAULT, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_CCSRBAR_DEFAULT, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+#else
+#error("Update the number of table entries in tlb1_entry")
+#endif
+
+ /*
+ * TLB0 16K Cacheable, guarded
+ * 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 FSL_BOOKE_MAS0(0, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+ .long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR, MAS2_G)
+ .long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ .long FSL_BOOKE_MAS0(0, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+ .long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 4 * 1024, MAS2_G)
+ .long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 4 * 1024, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ .long FSL_BOOKE_MAS0(0, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+ .long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 8 * 1024, MAS2_G)
+ .long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 8 * 1024, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ .long FSL_BOOKE_MAS0(0, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 0, 0, 0, 0)
+ .long FSL_BOOKE_MAS2(CFG_INIT_RAM_ADDR + 12 * 1024, MAS2_G)
+ .long FSL_BOOKE_MAS3(CFG_INIT_RAM_ADDR + 12 * 1024, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ /* TLB 1 Initializations */
+ /*
+ * TLB 0, 1: 128M Non-cacheable, guarded
+ * 0xf8000000 128M FLASH
+ * Out of reset this entry is only 4K.
+ */
+ .long FSL_BOOKE_MAS0(1, 0, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long FSL_BOOKE_MAS2(CFG_FLASH_BASE + 0x4000000, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_FLASH_BASE + 0x4000000, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ .long FSL_BOOKE_MAS0(1, 1, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long FSL_BOOKE_MAS2(CFG_FLASH_BASE, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_FLASH_BASE, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ /*
+ * TLB 2: 1G Non-cacheable, guarded
+ * 0x80000000 1G PCI1/PCIE 8,9,a,b
+ */
+ .long FSL_BOOKE_MAS0(1, 2, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1G)
+ .long FSL_BOOKE_MAS2(CFG_PCI_PHYS, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_PCI_PHYS, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ /*
+ * TLB 3, 4: 512M Non-cacheable, guarded
+ * 0xc0000000 1G PCI2
+ */
+ .long FSL_BOOKE_MAS0(1, 3, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long FSL_BOOKE_MAS2(CFG_PCI2_MEM_PHYS, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_PCI2_MEM_PHYS, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ .long FSL_BOOKE_MAS0(1, 4, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_256M)
+ .long FSL_BOOKE_MAS2(CFG_PCI2_MEM_PHYS + 0x10000000, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_PCI2_MEM_PHYS + 0x10000000, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))
+
+ /*
+ * TLB 5: 64M Non-cacheable, guarded
+ * 0xe000_0000 1M CCSRBAR
+ * 0xe200_0000 1M PCI1 IO
+ * 0xe210_0000 1M PCI2 IO
+ * 0xe300_0000 1M PCIe IO
+ */
+ .long FSL_BOOKE_MAS0(1, 5, 0)
+ .long FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_64M)
+ .long FSL_BOOKE_MAS2(CFG_CCSRBAR, (MAS2_I|MAS2_G))
+ .long FSL_BOOKE_MAS3(CFG_CCSRBAR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))
+
+2:
+ entry_end
+
+/*
+ * LAW(Local Access Window) configuration:
+ *
+ * 0x0000_0000 0x7fff_ffff DDR 2G
+ * 0x8000_0000 0x9fff_ffff PCI1 MEM 512M
+ * 0xa000_0000 0xbfff_ffff PCIe MEM 512M
+ * 0xc000_0000 0xdfff_ffff PCI2 MEM 512M
+ * 0xe000_0000 0xe000_ffff CCSR 1M
+ * 0xe200_0000 0xe10f_ffff PCI1 IO 1M
+ * 0xe280_0000 0xe20f_ffff PCI2 IO 1M
+ * 0xe300_0000 0xe30f_ffff PCIe IO 1M
+ * 0xf800_0000 0xffff_ffff FLASH (boot bank) 128M
+ *
+ * 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.
+ *
+ * LAW 0 is reserved for boot mapping
+ */
+
+ .section .bootpg, "ax"
+ .globl law_entry
+law_entry:
+ entry_start
+
+ .long (4f-3f)/8
+3:
+ .long 0
+ .long (LAWAR_TRGT_DDR | (LAWAR_SIZE & LAWAR_SIZE_1G)) & ~LAWAR_EN
+
+ .long (CFG_PCI1_MEM_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_512M)
+
+ .long (CFG_PCI1_IO_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCI1 | (LAWAR_SIZE & LAWAR_SIZE_1M)
+
+ .long (CFG_PCI2_MEM_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_512M)
+
+ .long (CFG_PCI2_IO_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCI2 | (LAWAR_SIZE & LAWAR_SIZE_1M)
+
+ .long (CFG_PCIE1_MEM_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCIE | (LAWAR_SIZE & LAWAR_SIZE_512M)
+
+ .long (CFG_PCIE1_IO_PHYS>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_PCIE | (LAWAR_SIZE & LAWAR_SIZE_1M)
+
+ /* LBC window - maps 256M 0xf0000000 -> 0xffffffff */
+ .long (CFG_LBC_CACHE_BASE>>12) & 0xfffff
+ .long LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M)
+
+4:
+ entry_end
generated by cgit v1.1 at 2024-11-16 09:06:48 +0000