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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2015-02-20 08:04:09 (GMT)
committerTom Rini <trini@ti.com>2015-02-21 13:23:51 (GMT)
commit3e93b4e6001104152fec850d4724ea9ffad03e05 (patch)
tree8c205453e2b26d85e3abb5d20e81f50cada96707 /arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S
parent72a8ff4b04771071023ff1024e268c2fbdf159e7 (diff)
downloadu-boot-3e93b4e6001104152fec850d4724ea9ffad03e05.tar.xz
ARM: orion5x: move SoC sources to mach-orion5x
Move arch/arm/cpu/arm926ejs/orion5x/* -> arch/arm/mach-orion5x/* Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S')
-rw-r--r--arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S277
1 files changed, 0 insertions, 277 deletions
diff --git a/arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S b/arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S
deleted file mode 100644
index 4dacc29..0000000
--- a/arch/arm/cpu/arm926ejs/orion5x/lowlevel_init.S
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright (C) 2010 Albert ARIBAUD <albert.u.boot@aribaud.net>
- *
- * (C) Copyright 2009
- * Marvell Semiconductor <www.marvell.com>
- * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <config.h>
-#include "asm/arch/orion5x.h"
-
-/*
- * Configuration values for SDRAM access setup
- */
-
-#define SDRAM_CONFIG 0x3148400
-#define SDRAM_MODE 0x62
-#define SDRAM_CONTROL 0x4041000
-#define SDRAM_TIME_CTRL_LOW 0x11602220
-#define SDRAM_TIME_CTRL_HI 0x40c
-#define SDRAM_OPEN_PAGE_EN 0x0
-/* DDR 1 2x 32M NANYA NT5DS16M16CS-6K ==> 64MB */
-#define SDRAM_BANK0_SIZE 0x3ff0001
-#define SDRAM_ADDR_CTRL 0x10
-
-#define SDRAM_OP_NOP 0x05
-#define SDRAM_OP_SETMODE 0x03
-
-#define SDRAM_PAD_CTRL_WR_EN 0x80000000
-#define SDRAM_PAD_CTRL_TUNE_EN 0x00010000
-#define SDRAM_PAD_CTRL_DRVN_MASK 0x0000003f
-#define SDRAM_PAD_CTRL_DRVP_MASK 0x00000fc0
-
-/*
- * For Guideline MEM-3 - Drive Strength value
- */
-
-#define DDR1_PAD_STRENGTH_DEFAULT 0x00001000
-#define SDRAM_PAD_CTRL_DRV_STR_MASK 0x00003000
-
-/*
- * For Guideline MEM-4 - DQS Reference Delay Tuning
- */
-
-#define MSAR_ARMDDRCLCK_MASK 0x000000f0
-#define MSAR_ARMDDRCLCK_H_MASK 0x00000100
-
-#define MSAR_ARMDDRCLCK_333_167 0x00000000
-#define MSAR_ARMDDRCLCK_500_167 0x00000030
-#define MSAR_ARMDDRCLCK_667_167 0x00000060
-#define MSAR_ARMDDRCLCK_400_200_1 0x000001E0
-#define MSAR_ARMDDRCLCK_400_200 0x00000010
-#define MSAR_ARMDDRCLCK_600_200 0x00000050
-#define MSAR_ARMDDRCLCK_800_200 0x00000070
-
-#define FTDLL_DDR1_166MHZ 0x0047F001
-
-#define FTDLL_DDR1_200MHZ 0x0044D001
-
-/*
- * Low-level init happens right after start.S has switched to SVC32,
- * flushed and disabled caches and disabled MMU. We're still running
- * from the boot chip select, so the first thing we should do is set
- * up RAM for us to relocate into.
- */
-
-.globl lowlevel_init
-
-lowlevel_init:
-
- /* Use 'r4 as the base for internal register accesses */
- ldr r4, =ORION5X_REGS_PHY_BASE
-
- /* move internal registers from the default 0xD0000000
- * to their intended location, defined by SoC */
- ldr r3, =0xD0000000
- add r3, r3, #0x20000
- str r4, [r3, #0x80]
-
- /* Use R3 as the base for DRAM registers */
- add r3, r4, #0x01000
-
- /*DDR SDRAM Initialization Control */
- ldr r6, =0x00000001
- str r6, [r3, #0x480]
-
- /* Use R3 as the base for PCI registers */
- add r3, r4, #0x31000
-
- /* Disable arbiter */
- ldr r6, =0x00000030
- str r6, [r3, #0xd00]
-
- /* Use R3 as the base for DRAM registers */
- add r3, r4, #0x01000
-
- /* set all dram windows to 0 */
- mov r6, #0
- str r6, [r3, #0x504]
- str r6, [r3, #0x50C]
- str r6, [r3, #0x514]
- str r6, [r3, #0x51C]
-
- /* 1) Configure SDRAM */
- ldr r6, =SDRAM_CONFIG
- str r6, [r3, #0x400]
-
- /* 2) Set SDRAM Control reg */
- ldr r6, =SDRAM_CONTROL
- str r6, [r3, #0x404]
-
- /* 3) Write SDRAM address control register */
- ldr r6, =SDRAM_ADDR_CTRL
- str r6, [r3, #0x410]
-
- /* 4) Write SDRAM bank 0 size register */
- ldr r6, =SDRAM_BANK0_SIZE
- str r6, [r3, #0x504]
- /* keep other banks disabled */
-
- /* 5) Write SDRAM open pages control register */
- ldr r6, =SDRAM_OPEN_PAGE_EN
- str r6, [r3, #0x414]
-
- /* 6) Write SDRAM timing Low register */
- ldr r6, =SDRAM_TIME_CTRL_LOW
- str r6, [r3, #0x408]
-
- /* 7) Write SDRAM timing High register */
- ldr r6, =SDRAM_TIME_CTRL_HI
- str r6, [r3, #0x40C]
-
- /* 8) Write SDRAM mode register */
- /* The CPU must not attempt to change the SDRAM Mode register setting */
- /* prior to DRAM controller completion of the DRAM initialization */
- /* sequence. To guarantee this restriction, it is recommended that */
- /* the CPU sets the SDRAM Operation register to NOP command, performs */
- /* read polling until the register is back in Normal operation value, */
- /* and then sets SDRAM Mode register to its new value. */
-
- /* 8.1 write 'nop' to SDRAM operation */
- ldr r6, =SDRAM_OP_NOP
- str r6, [r3, #0x418]
-
- /* 8.2 poll SDRAM operation until back in 'normal' mode. */
-1:
- ldr r6, [r3, #0x418]
- cmp r6, #0
- bne 1b
-
- /* 8.3 Now its safe to write new value to SDRAM Mode register */
- ldr r6, =SDRAM_MODE
- str r6, [r3, #0x41C]
-
- /* 8.4 Set new mode */
- ldr r6, =SDRAM_OP_SETMODE
- str r6, [r3, #0x418]
-
- /* 8.5 poll SDRAM operation until back in 'normal' mode. */
-2:
- ldr r6, [r3, #0x418]
- cmp r6, #0
- bne 2b
-
- /* DDR SDRAM Address/Control Pads Calibration */
- ldr r6, [r3, #0x4C0]
-
- /* Set Bit [31] to make the register writable */
- orr r6, r6, #SDRAM_PAD_CTRL_WR_EN
- str r6, [r3, #0x4C0]
-
- bic r6, r6, #SDRAM_PAD_CTRL_WR_EN
- bic r6, r6, #SDRAM_PAD_CTRL_TUNE_EN
- bic r6, r6, #SDRAM_PAD_CTRL_DRVN_MASK
- bic r6, r6, #SDRAM_PAD_CTRL_DRVP_MASK
-
- /* Get the final N locked value of driving strength [22:17] */
- mov r1, r6
- mov r1, r1, LSL #9
- mov r1, r1, LSR #26 /* r1[5:0]<DrvN> = r3[22:17]<LockN> */
- orr r1, r1, r1, LSL #6 /* r1[11:6]<DrvP> = r1[5:0]<DrvN> */
-
- /* Write to both <DrvN> bits [5:0] and <DrvP> bits [11:6] */
- orr r6, r6, r1
- str r6, [r3, #0x4C0]
-
- /* DDR SDRAM Data Pads Calibration */
- ldr r6, [r3, #0x4C4]
-
- /* Set Bit [31] to make the register writable */
- orr r6, r6, #SDRAM_PAD_CTRL_WR_EN
- str r6, [r3, #0x4C4]
-
- bic r6, r6, #SDRAM_PAD_CTRL_WR_EN
- bic r6, r6, #SDRAM_PAD_CTRL_TUNE_EN
- bic r6, r6, #SDRAM_PAD_CTRL_DRVN_MASK
- bic r6, r6, #SDRAM_PAD_CTRL_DRVP_MASK
-
- /* Get the final N locked value of driving strength [22:17] */
- mov r1, r6
- mov r1, r1, LSL #9
- mov r1, r1, LSR #26
- orr r1, r1, r1, LSL #6 /* r1[5:0] = r3[22:17]<LockN> */
-
- /* Write to both <DrvN> bits [5:0] and <DrvP> bits [11:6] */
- orr r6, r6, r1
-
- str r6, [r3, #0x4C4]
-
- /* Implement Guideline (GL# MEM-3) Drive Strength Value */
- /* Relevant for: 88F5181-A1/B0/B1 and 88F5281-A0/B0 */
-
- ldr r1, =DDR1_PAD_STRENGTH_DEFAULT
-
- /* Enable writes to DDR SDRAM Addr/Ctrl Pads Calibration register */
- ldr r6, [r3, #0x4C0]
- orr r6, r6, #SDRAM_PAD_CTRL_WR_EN
- str r6, [r3, #0x4C0]
-
- /* Correct strength and disable writes again */
- bic r6, r6, #SDRAM_PAD_CTRL_WR_EN
- bic r6, r6, #SDRAM_PAD_CTRL_DRV_STR_MASK
- orr r6, r6, r1
- str r6, [r3, #0x4C0]
-
- /* Enable writes to DDR SDRAM Data Pads Calibration register */
- ldr r6, [r3, #0x4C4]
- orr r6, r6, #SDRAM_PAD_CTRL_WR_EN
- str r6, [r3, #0x4C4]
-
- /* Correct strength and disable writes again */
- bic r6, r6, #SDRAM_PAD_CTRL_DRV_STR_MASK
- bic r6, r6, #SDRAM_PAD_CTRL_WR_EN
- orr r6, r6, r1
- str r6, [r3, #0x4C4]
-
- /* Implement Guideline (GL# MEM-4) DQS Reference Delay Tuning */
- /* Relevant for: 88F5181-A1/B0/B1 and 88F5281-A0/B0 */
-
- /* Get the "sample on reset" register for the DDR frequancy */
- ldr r3, =0x10000
- ldr r6, [r3, #0x010]
- ldr r1, =MSAR_ARMDDRCLCK_MASK
- and r1, r6, r1
-
- ldr r6, =FTDLL_DDR1_166MHZ
- cmp r1, #MSAR_ARMDDRCLCK_333_167
- beq 3f
- cmp r1, #MSAR_ARMDDRCLCK_500_167
- beq 3f
- cmp r1, #MSAR_ARMDDRCLCK_667_167
- beq 3f
-
- ldr r6, =FTDLL_DDR1_200MHZ
- cmp r1, #MSAR_ARMDDRCLCK_400_200_1
- beq 3f
- cmp r1, #MSAR_ARMDDRCLCK_400_200
- beq 3f
- cmp r1, #MSAR_ARMDDRCLCK_600_200
- beq 3f
- cmp r1, #MSAR_ARMDDRCLCK_800_200
- beq 3f
-
- ldr r6, =0
-
-3:
- /* Use R3 as the base for DRAM registers */
- add r3, r4, #0x01000
-
- ldr r2, [r3, #0x484]
- orr r2, r2, r6
- str r2, [r3, #0x484]
-
- /* Return to U-boot via saved link register */
- mov pc, lr