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Diffstat (limited to 'board/incaip/memsetup.S')
| -rw-r--r-- | board/incaip/memsetup.S | 295 |
1 files changed, 0 insertions, 295 deletions
diff --git a/board/incaip/memsetup.S b/board/incaip/memsetup.S deleted file mode 100644 index 3f883c1..0000000 --- a/board/incaip/memsetup.S +++ /dev/null @@ -1,295 +0,0 @@ -/* - * Memory sub-system initialization code for INCA-IP development board. - * - * Copyright (c) 2003 Wolfgang Denk <wd@denx.de> - * - * 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 <config.h> -#include <version.h> -#include <asm/regdef.h> - - -#define EBU_MODUL_BASE 0xB8000200 -#define EBU_CLC(value) 0x0000(value) -#define EBU_CON(value) 0x0010(value) -#define EBU_ADDSEL0(value) 0x0020(value) -#define EBU_ADDSEL1(value) 0x0024(value) -#define EBU_ADDSEL2(value) 0x0028(value) -#define EBU_BUSCON0(value) 0x0060(value) -#define EBU_BUSCON1(value) 0x0064(value) -#define EBU_BUSCON2(value) 0x0068(value) - -#define MC_MODUL_BASE 0xBF800000 -#define MC_ERRCAUSE(value) 0x0100(value) -#define MC_ERRADDR(value) 0x0108(value) -#define MC_IOGP(value) 0x0800(value) -#define MC_SELFRFSH(value) 0x0A00(value) -#define MC_CTRLENA(value) 0x1000(value) -#define MC_MRSCODE(value) 0x1008(value) -#define MC_CFGDW(value) 0x1010(value) -#define MC_CFGPB0(value) 0x1018(value) -#define MC_LATENCY(value) 0x1038(value) -#define MC_TREFRESH(value) 0x1040(value) - -#define CGU_MODUL_BASE 0xBF107000 -#define CGU_PLL1CR(value) 0x0008(value) -#define CGU_DIVCR(value) 0x0010(value) -#define CGU_MUXCR(value) 0x0014(value) -#define CGU_PLL1SR(value) 0x000C(value) - - .set noreorder - - -/* - * void ebu_init(long) - * - * a0 has the clock value we are going to run at - */ - .globl ebu_init - .ent ebu_init -ebu_init: - - li t1, EBU_MODUL_BASE - li t2, 0xA0000041 - sw t2, EBU_ADDSEL0(t1) - li t2, 0xA0800041 - sw t2, EBU_ADDSEL2(t1) - li t2, 0xBE0000F1 - sw t2, EBU_ADDSEL1(t1) - - li t3, 100000000 - beq a0, t3, 1f - nop - li t3, 133000000 - beq a0, t3, 2f - nop - li t3, 150000000 - beq a0, t3, 2f - nop - b 3f - nop - - /* 100 MHz */ -1: - li t2, 0x8841417D - sw t2, EBU_BUSCON0(t1) - sw t2, EBU_BUSCON2(t1) - li t2, 0x684142BD - b 3f - sw t2, EBU_BUSCON1(t1) /* delay slot */ - - /* 133 or 150 MHz */ -2: - li t2, 0x8841417E - sw t2, EBU_BUSCON0(t1) - sw t2, EBU_BUSCON2(t1) - li t2, 0x684143FD - sw t2, EBU_BUSCON1(t1) -3: - j ra - nop - - .end ebu_init - - -/* - * void cgu_init(long) - * - * a0 has the clock value - */ - .globl cgu_init - .ent cgu_init -cgu_init: - - li t1, CGU_MODUL_BASE - - li t3, 100000000 - beq a0, t3, 1f - nop - li t3, 133000000 - beq a0, t3, 2f - nop - li t3, 150000000 - beq a0, t3, 3f - nop - b 5f - nop - - /* 100 MHz clock */ -1: - li t2, 0x80000014 - sw t2, CGU_DIVCR(t1) - li t2, 0x80000000 - sw t2, CGU_MUXCR(t1) - li t2, 0x800B0001 - b 5f - sw t2, CGU_PLL1CR(t1) /* delay slot */ - - /* 133 MHz clock */ -2: - li t2, 0x80000054 - sw t2, CGU_DIVCR(t1) - li t2, 0x80000000 - sw t2, CGU_MUXCR(t1) - li t2, 0x800B0001 - b 5f - sw t2, CGU_PLL1CR(t1) /* delay slot */ - - /* 150 MHz clock */ -3: - li t2, 0x80000017 - sw t2, CGU_DIVCR(t1) - li t2, 0xC00B0001 - sw t2, CGU_PLL1CR(t1) - li t3, 0x80000000 -4: - lw t2, CGU_PLL1SR(t1) - and t2, t2, t3 - beq t2, zero, 4b - nop - li t2, 0x80000001 - sw t2, CGU_MUXCR(t1) -5: - j ra - nop - - .end cgu_init - - -/* - * void sdram_init(long) - * - * a0 has the clock value - */ - .globl sdram_init - .ent sdram_init -sdram_init: - - li t1, MC_MODUL_BASE - -#if 0 - /* Disable memory controller before changing any of its registers */ - sw zero, MC_CTRLENA(t1) -#endif - - li t2, 100000000 - beq a0, t2, 1f - nop - li t2, 133000000 - beq a0, t2, 2f - nop - li t2, 150000000 - beq a0, t2, 3f - nop - b 5f - nop - - /* 100 MHz clock */ -1: - /* Set clock ratio (clkrat=1:1, rddel=3) */ - li t2, 0x00000003 - sw t2, MC_IOGP(t1) - - /* Set sdram refresh rate (4K/64ms @ 100MHz) */ - li t2, 0x0000061A - b 4f - sw t2, MC_TREFRESH(t1) - - /* 133 MHz clock */ -2: - /* Set clock ratio (clkrat=1:1, rddel=3) */ - li t2, 0x00000003 - sw t2, MC_IOGP(t1) - - /* Set sdram refresh rate (4K/64ms @ 133MHz) */ - li t2, 0x00000822 - b 4f - sw t2, MC_TREFRESH(t1) - - /* 150 MHz clock */ -3: - /* Set clock ratio (clkrat=3:2, rddel=4) */ - li t2, 0x00000014 - sw t2, MC_IOGP(t1) - - /* Set sdram refresh rate (4K/64ms @ 150MHz) */ - li t2, 0x00000927 - sw t2, MC_TREFRESH(t1) - -4: - /* Clear Error log registers */ - sw zero, MC_ERRCAUSE(t1) - sw zero, MC_ERRADDR(t1) - - /* Clear Power-down registers */ - sw zero, MC_SELFRFSH(t1) - - /* Set CAS Latency */ - li t2, 0x00000020 /* CL = 2 */ - sw t2, MC_MRSCODE(t1) - - /* Set word width to 16 bit */ - li t2, 0x2 - sw t2, MC_CFGDW(t1) - - /* Set CS0 to SDRAM parameters */ - li t2, 0x000014C9 - sw t2, MC_CFGPB0(t1) - - /* Set SDRAM latency parameters */ - li t2, 0x00026325 /* BC PC100 */ - sw t2, MC_LATENCY(t1) - -5: - /* Finally enable the controller */ - li t2, 0x00000001 - sw t2, MC_CTRLENA(t1) - - j ra - nop - - .end sdram_init - - - .globl memsetup - .ent memsetup -memsetup: - - /* EBU, CGU and SDRAM Initialization. - */ - li a0, CPU_CLOCK_RATE - move t0, ra - - /* We rely on the fact that neither ebu_init() nor cgu_init() nor sdram_init() - * modify t0 and a0. - */ - bal cgu_init - nop - bal ebu_init - nop - bal sdram_init - nop - move ra, t0 - - j ra - nop - - .end memsetup |