From: Shinya Kuribayashi Date: Sat, 27 Oct 2007 06:00:24 +0000 (+0900) Subject: [MIPS] pb1000: Replace obsolete memsetup.S with lowlevel_init.S X-Git-Tag: v1.3.0~9^2~7 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=2e4a6e3667a1e39c0e6e99498686b15d2718b369;p=oweals%2Fu-boot.git [MIPS] pb1000: Replace obsolete memsetup.S with lowlevel_init.S Signed-off-by: Shinya Kuribayashi --- diff --git a/board/pb1x00/Makefile b/board/pb1x00/Makefile index f7d58416c9..afe02c27c6 100644 --- a/board/pb1x00/Makefile +++ b/board/pb1x00/Makefile @@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(BOARD).a COBJS = $(BOARD).o flash.o -SOBJS = memsetup.o +SOBJS = lowlevel_init.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) diff --git a/board/pb1x00/lowlevel_init.S b/board/pb1x00/lowlevel_init.S new file mode 100644 index 0000000000..e851e2fed0 --- /dev/null +++ b/board/pb1x00/lowlevel_init.S @@ -0,0 +1,392 @@ +/* Memory sub-system initialization code */ + +#include +#include +#include +#include +#include + +#define AU1500_SYS_ADDR 0xB1900000 +#define sys_endian 0x0038 +#define CP0_Config0 $16 +#define MEM_1MS ((396000000/1000000) * 1000) + + .text + .set noreorder + .set mips32 + + .globl lowlevel_init +lowlevel_init: + /* + * Step 1) Establish CPU endian mode. + * NOTE: A fair amount of code is necessary on the Pb1000 to + * obtain the value of Switch S8.1 which is used to determine + * endian at run-time. + */ + + /* RCE1 */ + li t0, MEM_STCFG1 + li t1, 0x00000083 + sw t1, 0(t0) + + li t0, MEM_STTIME1 + li t1, 0x33030A10 + sw t1, 0(t0) + + li t0, MEM_STADDR1 + li t1, 0x11803E40 + sw t1, 0(t0) + + /* Set DSTRB bits so switch will read correctly */ + li t1, 0xBE00000C + lw t2, 0(t1) + or t2, t2, 0x00000300 + sw t2, 0(t1) + + /* Check switch setting */ + li t1, 0xBE000014 + lw t2, 0(t1) + and t2, t2, 0x00000100 + bne t2, zero, 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 + + /* First setup pll:s to make serial work ok */ + /* We have a 12 MHz crystal */ + li t0, SYS_CPUPLL + li t1, 0x21 /* 396 MHz */ + 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, 8 /* 96 MHz */ + sw t1, 0(t0) /* aux pll */ + sync + + /* Static memory controller */ + + /* RCE0 8MB AMD29D323 Flash */ + li t0, MEM_STCFG0 + li t1, 0x00001403 + sw t1, 0(t0) + + li t0, MEM_STTIME0 + li t1, 0xFFFFFFDD + sw t1, 0(t0) + + li t0, MEM_STADDR0 + li t1, 0x11F83FE0 + sw t1, 0(t0) + + /* RCE1 CPLD Board Logic */ + li t0, MEM_STCFG1 + li t1, 0x00000083 + sw t1, 0(t0) + + li t0, MEM_STTIME1 + li t1, 0x33030A10 + sw t1, 0(t0) + + li t0, MEM_STADDR1 + li t1, 0x11803E40 + sw t1, 0(t0) + + /* RCE2 CPLD Board Logic */ + li t0, MEM_STCFG2 + li t1, 0x00000004 + sw t1, 0(t0) + + li t0, MEM_STTIME2 + li t1, 0x08061908 + sw t1, 0(t0) + + li t0, MEM_STADDR2 + li t1, 0x12A03FC0 + sw t1, 0(t0) + + /* 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 + + /* + * Skip memory setup if we are running from memory + */ + li t0, 0x90000000 + sub t0, ra, t0 + bltz t0, skip_memsetup + nop + + /* + * SDCS0 - Not used, for SMROM + * SDCS1 - 32MB Micron 48LCBM16A2 + * SDCS2 - 32MB Micron 48LCBM16A2 + */ + li t0, MEM_SDMODE0 + li t1, 0x00000000 + sw t1, 0(t0) + + li t0, MEM_SDMODE1 + li t1, 0x00552229 + sw t1, 0(t0) + + li t0, MEM_SDMODE2 + li t1, 0x00552229 + sw t1, 0(t0) + + li t0, MEM_SDADDR0 + li t1, 0x00000000 + sw t1, 0(t0) + + li t0, MEM_SDADDR1 + li t1, 0x001003F8 + sw t1, 0(t0) + + li t0, MEM_SDADDR2 + li t1, 0x001023F8 + sw t1, 0(t0) + + sync + + li t0, MEM_SDREFCFG + li t1, 0x74000c30 /* 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, 0x76000c30 /* Enable */ + sw t1, 0(t0) + sync + + li t0, MEM_SDWRMD0 + li t1, 0x00000023 + sw t1, 0(t0) + sync + + li t0, MEM_SDWRMD1 + li t1, 0x00000023 + sw t1, 0(t0) + sync + + li t0, MEM_SDWRMD2 + li t1, 0x00000023 + sw t1, 0(t0) + sync + + /* wait 1mS after setup */ + li t1, MEM_1MS +1: add t1, -1 + bne t1, zero, 1b + nop + +skip_memsetup: + + li t0, SYS_PINFUNC + li t1, 0/*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 diff --git a/board/pb1x00/memsetup.S b/board/pb1x00/memsetup.S deleted file mode 100644 index 44f02b9555..0000000000 --- a/board/pb1x00/memsetup.S +++ /dev/null @@ -1,392 +0,0 @@ -/* Memory sub-system initialization code */ - -#include -#include -#include -#include -#include - -#define AU1500_SYS_ADDR 0xB1900000 -#define sys_endian 0x0038 -#define CP0_Config0 $16 -#define MEM_1MS ((396000000/1000000) * 1000) - - .text - .set noreorder - .set mips32 - - .globl memsetup -memsetup: - /* - * Step 1) Establish CPU endian mode. - * NOTE: A fair amount of code is necessary on the Pb1000 to - * obtain the value of Switch S8.1 which is used to determine - * endian at run-time. - */ - - /* RCE1 */ - li t0, MEM_STCFG1 - li t1, 0x00000083 - sw t1, 0(t0) - - li t0, MEM_STTIME1 - li t1, 0x33030A10 - sw t1, 0(t0) - - li t0, MEM_STADDR1 - li t1, 0x11803E40 - sw t1, 0(t0) - - /* Set DSTRB bits so switch will read correctly */ - li t1, 0xBE00000C - lw t2, 0(t1) - or t2, t2, 0x00000300 - sw t2, 0(t1) - - /* Check switch setting */ - li t1, 0xBE000014 - lw t2, 0(t1) - and t2, t2, 0x00000100 - bne t2, zero, 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 - - /* First setup pll:s to make serial work ok */ - /* We have a 12 MHz crystal */ - li t0, SYS_CPUPLL - li t1, 0x21 /* 396 MHz */ - 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, 8 /* 96 MHz */ - sw t1, 0(t0) /* aux pll */ - sync - - /* Static memory controller */ - - /* RCE0 8MB AMD29D323 Flash */ - li t0, MEM_STCFG0 - li t1, 0x00001403 - sw t1, 0(t0) - - li t0, MEM_STTIME0 - li t1, 0xFFFFFFDD - sw t1, 0(t0) - - li t0, MEM_STADDR0 - li t1, 0x11F83FE0 - sw t1, 0(t0) - - /* RCE1 CPLD Board Logic */ - li t0, MEM_STCFG1 - li t1, 0x00000083 - sw t1, 0(t0) - - li t0, MEM_STTIME1 - li t1, 0x33030A10 - sw t1, 0(t0) - - li t0, MEM_STADDR1 - li t1, 0x11803E40 - sw t1, 0(t0) - - /* RCE2 CPLD Board Logic */ - li t0, MEM_STCFG2 - li t1, 0x00000004 - sw t1, 0(t0) - - li t0, MEM_STTIME2 - li t1, 0x08061908 - sw t1, 0(t0) - - li t0, MEM_STADDR2 - li t1, 0x12A03FC0 - sw t1, 0(t0) - - /* 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 - - /* - * Skip memory setup if we are running from memory - */ - li t0, 0x90000000 - sub t0, ra, t0 - bltz t0, skip_memsetup - nop - - /* - * SDCS0 - Not used, for SMROM - * SDCS1 - 32MB Micron 48LCBM16A2 - * SDCS2 - 32MB Micron 48LCBM16A2 - */ - li t0, MEM_SDMODE0 - li t1, 0x00000000 - sw t1, 0(t0) - - li t0, MEM_SDMODE1 - li t1, 0x00552229 - sw t1, 0(t0) - - li t0, MEM_SDMODE2 - li t1, 0x00552229 - sw t1, 0(t0) - - li t0, MEM_SDADDR0 - li t1, 0x00000000 - sw t1, 0(t0) - - li t0, MEM_SDADDR1 - li t1, 0x001003F8 - sw t1, 0(t0) - - li t0, MEM_SDADDR2 - li t1, 0x001023F8 - sw t1, 0(t0) - - sync - - li t0, MEM_SDREFCFG - li t1, 0x74000c30 /* 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, 0x76000c30 /* Enable */ - sw t1, 0(t0) - sync - - li t0, MEM_SDWRMD0 - li t1, 0x00000023 - sw t1, 0(t0) - sync - - li t0, MEM_SDWRMD1 - li t1, 0x00000023 - sw t1, 0(t0) - sync - - li t0, MEM_SDWRMD2 - li t1, 0x00000023 - sw t1, 0(t0) - sync - - /* wait 1mS after setup */ - li t1, MEM_1MS -1: add t1, -1 - bne t1, zero, 1b - nop - -skip_memsetup: - - li t0, SYS_PINFUNC - li t1, 0/*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