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authorwdenk <wdenk>2005-04-02 23:52:25 +0000
committerwdenk <wdenk>2005-04-02 23:52:25 +0000
commit400558b561e2bdb47f87b96b3510dda0881a3662 (patch)
tree479fa3918e0031a95cdac9468cb8396e1f1a9b60 /board/dbau1x00/memsetup.S
parent414eec35e3832f4f9ce8a25ace7ead638be1f76f (diff)
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Prepare for SoC rework of ARM code:
- rename CONFIG_BOOTBINFUNC into CONFIG_INIT_CRITICAL - rename memsetup into lowlevel_init (function name and source files)
Diffstat (limited to 'board/dbau1x00/memsetup.S')
-rw-r--r--board/dbau1x00/memsetup.S587
1 files changed, 0 insertions, 587 deletions
diff --git a/board/dbau1x00/memsetup.S b/board/dbau1x00/memsetup.S
deleted file mode 100644
index c96d8a5..0000000
--- a/board/dbau1x00/memsetup.S
+++ /dev/null
@@ -1,587 +0,0 @@
-/* Memory sub-system initialization code */
-
-#include <config.h>
-#include <version.h>
-#include <asm/regdef.h>
-#include <asm/au1x00.h>
-#include <asm/mipsregs.h>
-
-#define AU1500_SYS_ADDR 0xB1900000
-#define sys_endian 0x0038
-#define CP0_Config0 $16
-#define CPU_SCALE ((CFG_MHZ) / 12) /* CPU clock is a multiple of 12 MHz */
-#define MEM_1MS ((CFG_MHZ) * 1000)
-
- .text
- .set noreorder
- .set mips32
-
- .globl memsetup
-memsetup:
- /*
- * Step 1) Establish CPU endian mode.
- * Db1500-specific:
- * Switch S1.1 Off(bit7 reads 1) is Little Endian
- * Switch S1.1 On (bit7 reads 0) is Big Endian
- */
-#ifdef CONFIG_DBAU1550
- li t0, MEM_STCFG2
- li t1, 0x00000040
- sw t1, 0(t0)
-
- li t0, MEM_STTIME2
- li t1, 0x22080a20
- sw t1, 0(t0)
-
- li t0, MEM_STADDR2
- li t1, 0x10c03f00
- sw t1, 0(t0)
-#else
- li t0, MEM_STCFG1
- li t1, 0x00000080
- sw t1, 0(t0)
-
- li t0, MEM_STTIME1
- li t1, 0x22080a20
- sw t1, 0(t0)
-
- li t0, MEM_STADDR1
- li t1, 0x10c03f00
- sw t1, 0(t0)
-#endif
-
- li t0, DB1XX0_BCSR_ADDR
- lw t1,8(t0)
- andi t1,t1,0x80
- beq zero,t1,big_endian
- nop
-little_endian:
-
- /* Change Au1 core to little endian */
- li t0, AU1500_SYS_ADDR
- li t1, 1
- sw t1, sys_endian(t0)
- mfc0 t2, CP0_CONFIG
- mtc0 t2, CP0_CONFIG
- nop
- nop
-
- /* Big Endian is default so nothing to do but fall through */
-
-big_endian:
-
- /*
- * Step 2) Establish Status Register
- * (set BEV, clear ERL, clear EXL, clear IE)
- */
- li t1, 0x00400000
- mtc0 t1, CP0_STATUS
-
- /*
- * Step 3) Establish CP0 Config0
- * (set OD, set K0=3)
- */
- li t1, 0x00080003
- mtc0 t1, CP0_CONFIG
-
- /*
- * Step 4) Disable Watchpoint facilities
- */
- li t1, 0x00000000
- mtc0 t1, CP0_WATCHLO
- mtc0 t1, CP0_IWATCHLO
- /*
- * Step 5) Disable the performance counters
- */
- mtc0 zero, CP0_PERFORMANCE
- nop
-
- /*
- * Step 6) Establish EJTAG Debug register
- */
- mtc0 zero, CP0_DEBUG
- nop
-
- /*
- * Step 7) Establish Cause
- * (set IV bit)
- */
- li t1, 0x00800000
- mtc0 t1, CP0_CAUSE
-
- /* Establish Wired (and Random) */
- mtc0 zero, CP0_WIRED
- nop
-
-#ifdef CONFIG_DBAU1550
- /* No workaround if running from ram */
- lui t0, 0xffc0
- lui t3, 0xbfc0
- and t1, ra, t0
- bne t1, t3, noCacheJump
- nop
-
- /*** From AMD YAMON ***/
- /*
- * Step 8) Initialize the caches
- */
- li t0, (16*1024)
- li t1, 32
- li t2, 0x80000000
- addu t3, t0, t2
-cacheloop:
- cache 0, 0(t2)
- cache 1, 0(t2)
- addu t2, t1
- bne t2, t3, cacheloop
- nop
-
- /* Save return address */
- move t3, ra
-
- /* Run from cacheable space now */
- bal cachehere
- nop
-cachehere:
- li t1, ~0x20000000 /* convert to KSEG0 */
- and t0, ra, t1
- addi t0, 5*4 /* 5 insns beyond cachehere */
- jr t0
- nop
-
- /* Restore return address */
- move ra, t3
-
- /*
- * Step 9) Initialize the TLB
- */
- li t0, 0 # index value
- li t1, 0x00000000 # entryhi value
- li t2, 32 # 32 entries
-
-tlbloop:
- /* Probe TLB for matching EntryHi */
- mtc0 t1, CP0_ENTRYHI
- tlbp
- nop
-
- /* Examine Index[P], 1=no matching entry */
- mfc0 t3, CP0_INDEX
- li t4, 0x80000000
- and t3, t4, t3
- addiu t1, t1, 1 # increment t1 (asid)
- beq zero, t3, tlbloop
- nop
-
- /* Initialize the TLB entry */
- mtc0 t0, CP0_INDEX
- mtc0 zero, CP0_ENTRYLO0
- mtc0 zero, CP0_ENTRYLO1
- mtc0 zero, CP0_PAGEMASK
- tlbwi
-
- /* Do it again */
- addiu t0, t0, 1
- bne t0, t2, tlbloop
- nop
-
- /* First setup pll:s to make serial work ok */
- /* We have a 12 MHz crystal */
- li t0, SYS_CPUPLL
- li t1, CPU_SCALE /* CPU clock */
- sw t1, 0(t0)
- sync
- nop
- nop
-
- /* wait 1mS for clocks to settle */
- li t1, MEM_1MS
-1: add t1, -1
- bne t1, zero, 1b
- nop
- /* Setup AUX PLL */
- li t0, SYS_AUXPLL
- li t1, 0x20 /* 96 MHz */
- sw t1, 0(t0) /* aux pll */
- sync
-
- /* Static memory controller */
- /* RCE0 - can not change while fetching, do so from icache */
- move t2, ra /* Store return address */
- bal getAddr
- nop
-
-getAddr:
- move t1, ra
- move ra, t2 /* Move return addess back */
-
- cache 0x14,0(t1)
- cache 0x14,32(t1)
- /*** /From YAMON ***/
-
-noCacheJump:
-#endif /* CONFIG_DBAU1550 */
-
-#ifdef CONFIG_DBAU1550
- li t0, MEM_STTIME0
- li t1, 0x040181D7
- sw t1, 0(t0)
-
- /* RCE0 AMD MirrorBit Flash (?) */
- li t0, MEM_STCFG0
- li t1, 0x00000003
- sw t1, 0(t0)
-
- li t0, MEM_STADDR0
- li t1, 0x11803E00
- sw t1, 0(t0)
-#else /* CONFIG_DBAU1550 */
- li t0, MEM_STTIME0
- li t1, 0x00014C0F
- sw t1, 0(t0)
-
- /* RCE0 AMD 29LV640M MirrorBit Flash */
- li t0, MEM_STCFG0
- li t1, 0x00000013
- sw t1, 0(t0)
-
- li t0, MEM_STADDR0
- li t1, 0x11E03F80
- sw t1, 0(t0)
-#endif /* CONFIG_DBAU1550 */
-
- /* RCE1 CPLD Board Logic */
- li t0, MEM_STCFG1
- li t1, 0x00000080
- sw t1, 0(t0)
-
- li t0, MEM_STTIME1
- li t1, 0x22080a20
- sw t1, 0(t0)
-
- li t0, MEM_STADDR1
- li t1, 0x10c03f00
- sw t1, 0(t0)
-
-#ifdef CONFIG_DBAU1550
- /* RCE2 CPLD Board Logic */
- li t0, MEM_STCFG2
- li t1, 0x00000040
- sw t1, 0(t0)
-
- li t0, MEM_STTIME2
- li t1, 0x22080a20
- sw t1, 0(t0)
-
- li t0, MEM_STADDR2
- li t1, 0x10c03f00
- sw t1, 0(t0)
-#else
- li t0, MEM_STCFG2
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, MEM_STTIME2
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, MEM_STADDR2
- li t1, 0x00000000
- sw t1, 0(t0)
-#endif
-
- /* RCE3 PCMCIA 250ns */
- li t0, MEM_STCFG3
- li t1, 0x00000002
- sw t1, 0(t0)
-
- li t0, MEM_STTIME3
- li t1, 0x280E3E07
- sw t1, 0(t0)
-
- li t0, MEM_STADDR3
- li t1, 0x10000000
- sw t1, 0(t0)
-
- sync
-
- /* Set peripherals to a known state */
- li t0, IC0_CFG0CLR
- li t1, 0xFFFFFFFF
- sw t1, 0(t0)
-
- li t0, IC0_CFG0CLR
- sw t1, 0(t0)
-
- li t0, IC0_CFG1CLR
- sw t1, 0(t0)
-
- li t0, IC0_CFG2CLR
- sw t1, 0(t0)
-
- li t0, IC0_SRCSET
- sw t1, 0(t0)
-
- li t0, IC0_ASSIGNSET
- sw t1, 0(t0)
-
- li t0, IC0_WAKECLR
- sw t1, 0(t0)
-
- li t0, IC0_RISINGCLR
- sw t1, 0(t0)
-
- li t0, IC0_FALLINGCLR
- sw t1, 0(t0)
-
- li t0, IC0_TESTBIT
- li t1, 0x00000000
- sw t1, 0(t0)
- sync
-
- li t0, IC1_CFG0CLR
- li t1, 0xFFFFFFFF
- sw t1, 0(t0)
-
- li t0, IC1_CFG0CLR
- sw t1, 0(t0)
-
- li t0, IC1_CFG1CLR
- sw t1, 0(t0)
-
- li t0, IC1_CFG2CLR
- sw t1, 0(t0)
-
- li t0, IC1_SRCSET
- sw t1, 0(t0)
-
- li t0, IC1_ASSIGNSET
- sw t1, 0(t0)
-
- li t0, IC1_WAKECLR
- sw t1, 0(t0)
-
- li t0, IC1_RISINGCLR
- sw t1, 0(t0)
-
- li t0, IC1_FALLINGCLR
- sw t1, 0(t0)
-
- li t0, IC1_TESTBIT
- li t1, 0x00000000
- sw t1, 0(t0)
- sync
-
- li t0, SYS_FREQCTRL0
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, SYS_FREQCTRL1
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, SYS_CLKSRC
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, SYS_PININPUTEN
- li t1, 0x00000000
- sw t1, 0(t0)
- sync
-
- li t0, 0xB1100100
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, 0xB1400100
- li t1, 0x00000000
- sw t1, 0(t0)
-
-
- li t0, SYS_WAKEMSK
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, SYS_WAKESRC
- li t1, 0x00000000
- sw t1, 0(t0)
-
- /* wait 1mS before setup */
- li t1, MEM_1MS
-1: add t1, -1
- bne t1, zero, 1b
- nop
-
-#ifdef CONFIG_DBAU1550
-/* SDCS 0,1,2 DDR SDRAM */
- li t0, MEM_SDMODE0
- li t1, 0x04276221
- sw t1, 0(t0)
-
- li t0, MEM_SDMODE1
- li t1, 0x04276221
- sw t1, 0(t0)
-
- li t0, MEM_SDMODE2
- li t1, 0x04276221
- sw t1, 0(t0)
-
- li t0, MEM_SDADDR0
- li t1, 0xe21003f0
- sw t1, 0(t0)
-
- li t0, MEM_SDADDR1
- li t1, 0xe21043f0
- sw t1, 0(t0)
-
- li t0, MEM_SDADDR2
- li t1, 0xe21083f0
- sw t1, 0(t0)
-
- sync
-
- li t0, MEM_SDCONFIGA
- li t1, 0x9030060a /* Program refresh - disabled */
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDCONFIGB
- li t1, 0x00028000
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDPRECMD /* Precharge all */
- li t1, 0
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD0
- li t1, 0x40000000
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD1
- li t1, 0x40000000
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD2
- li t1, 0x40000000
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD0
- li t1, 0x00000063
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD1
- li t1, 0x00000063
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD2
- li t1, 0x00000063
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDPRECMD /* Precharge all */
- sw zero, 0(t0)
- sync
-
- /* Issue 2 autoref */
- li t0, MEM_SDAUTOREF
- sw zero, 0(t0)
- sync
-
- li t0, MEM_SDAUTOREF
- sw zero, 0(t0)
- sync
-
- /* Enable refresh */
- li t0, MEM_SDCONFIGA
- li t1, 0x9830060a /* Program refresh - enabled */
- sw t1, 0(t0)
- sync
-
-#else /* CONFIG_DBAU1550 */
-/* SDCS 0,1 SDRAM */
- li t0, MEM_SDMODE0
- li t1, 0x005522AA
- sw t1, 0(t0)
-
- li t0, MEM_SDMODE1
- li t1, 0x005522AA
- sw t1, 0(t0)
-
- li t0, MEM_SDMODE2
- li t1, 0x00000000
- sw t1, 0(t0)
-
- li t0, MEM_SDADDR0
- li t1, 0x001003F8
- sw t1, 0(t0)
-
-
- li t0, MEM_SDADDR1
- li t1, 0x001023F8
- sw t1, 0(t0)
-
- li t0, MEM_SDADDR2
- li t1, 0x00000000
- sw t1, 0(t0)
-
- sync
-
- li t0, MEM_SDREFCFG
- li t1, 0x64000C24 /* Disable */
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDPRECMD
- sw zero, 0(t0)
- sync
-
- li t0, MEM_SDAUTOREF
- sw zero, 0(t0)
- sync
- sw zero, 0(t0)
- sync
-
- li t0, MEM_SDREFCFG
- li t1, 0x66000C24 /* Enable */
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD0
- li t1, 0x00000033
- sw t1, 0(t0)
- sync
-
- li t0, MEM_SDWRMD1
- li t1, 0x00000033
- sw t1, 0(t0)
- sync
-
-#endif /* CONFIG_DBAU1550 */
- /* wait 1mS after setup */
- li t1, MEM_1MS
-1: add t1, -1
- bne t1, zero, 1b
- nop
-
- li t0, SYS_PINFUNC
- li t1, 0x00008080
- sw t1, 0(t0)
-
- li t0, SYS_TRIOUTCLR
- li t1, 0x00001FFF
- sw t1, 0(t0)
-
- li t0, SYS_OUTPUTCLR
- li t1, 0x00008000
- sw t1, 0(t0)
- sync
-
- j ra
- nop