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-rw-r--r--board/incaip/lowlevel_init.S287
1 files changed, 0 insertions, 287 deletions
diff --git a/board/incaip/lowlevel_init.S b/board/incaip/lowlevel_init.S
deleted file mode 100644
index b6cf6a9..0000000
--- a/board/incaip/lowlevel_init.S
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * Memory sub-system initialization code for INCA-IP development board.
- *
- * Copyright (c) 2003 Wolfgang Denk <wd@denx.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <config.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:
-__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:
- jr ra
- nop
-
- .end ebu_init
-
-
-/*
- * void cgu_init(long)
- *
- * a0 has the clock value
- */
- .globl cgu_init
- .ent cgu_init
-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:
- jr ra
- nop
-
- .end cgu_init
-
-
-/*
- * void sdram_init(long)
- *
- * a0 has the clock value
- */
- .globl sdram_init
- .ent sdram_init
-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)
-
- jr ra
- nop
-
- .end sdram_init
-
-
- .globl lowlevel_init
- .ent lowlevel_init
-lowlevel_init:
-
- /* Disable Watchdog.
- */
- la t9, disable_incaip_wdt
- jalr t9
- nop
-
- /* EBU, CGU and SDRAM Initialization.
- */
- li a0, CONFIG_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
-
- jr ra
- nop
-
- .end lowlevel_init