diff options
Diffstat (limited to 'x-loader/cpu')
| -rw-r--r-- | x-loader/cpu/arm926ejs/Makefile | 43 | ||||
| -rw-r--r-- | x-loader/cpu/arm926ejs/config.mk | 32 | ||||
| -rw-r--r-- | x-loader/cpu/arm926ejs/cpu.c | 126 | ||||
| -rw-r--r-- | x-loader/cpu/arm926ejs/start.S | 239 |
4 files changed, 0 insertions, 440 deletions
diff --git a/x-loader/cpu/arm926ejs/Makefile b/x-loader/cpu/arm926ejs/Makefile deleted file mode 100644 index 229b7e7..0000000 --- a/x-loader/cpu/arm926ejs/Makefile +++ /dev/null @@ -1,43 +0,0 @@ -# -# (C) Copyright 2000-2003 -# Wolfgang Denk, DENX Software Engineering, 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 $(TOPDIR)/config.mk - -LIB = lib$(CPU).a - -START = start.o -OBJS = cpu.o - -all: .depend $(START) $(LIB) - -$(LIB): $(OBJS) - $(AR) crv $@ $(OBJS) - -######################################################################### - -.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c) - $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@ - -sinclude .depend - -######################################################################### diff --git a/x-loader/cpu/arm926ejs/config.mk b/x-loader/cpu/arm926ejs/config.mk deleted file mode 100644 index f9adb10..0000000 --- a/x-loader/cpu/arm926ejs/config.mk +++ /dev/null @@ -1,32 +0,0 @@ -# -# (C) Copyright 2002 -# Gary Jennejohn, DENX Software Engineering, <gj@denx.de> -# -# See file CREDITS for list of people who contributed to this -# project. -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License as -# published by the Free Software Foundation; either version 2 of -# the License, or (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, -# MA 02111-1307 USA -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 - -PLATFORM_CPPFLAGS += -march=armv5 -# ========================================================================= -# -# Supply options according to compiler version -# -# ========================================================================= -PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) -PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -# diff --git a/x-loader/cpu/arm926ejs/cpu.c b/x-loader/cpu/arm926ejs/cpu.c deleted file mode 100644 index 972fa8a..0000000 --- a/x-loader/cpu/arm926ejs/cpu.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * (C) Copyright 2004 - * Texas Instruments <www.ti.com> - * Jian Zhang <jzhang@ti.com> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * (C) Copyright 2002 - * Gary Jennejohn, DENX Software Engineering, <gj@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 <common.h> - -#define TIMER_LOAD_VAL 0xffffffff - -/* macro to read the 32 bit timer */ -#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8)) - -static ulong timestamp; -static ulong lastdec; - -static void reset_timer_masked (void); - -/* nothing really to do with cpu, just starts up a counter. */ -int cpu_init (void) -{ - int32_t val; - - /* Start the decrementer ticking down from 0xffffffff */ - *((int32_t *) (CFG_TIMERBASE + LOAD_TIM)) = TIMER_LOAD_VAL; - val = MPUTIM_ST | MPUTIM_AR | MPUTIM_CLOCK_ENABLE | (CFG_PVT << MPUTIM_PTV_BIT); - *((int32_t *) (CFG_TIMERBASE + CNTL_TIMER)) = val; - - /* init the timestamp and lastdec value */ - reset_timer_masked(); - - return (0); -} - -static void reset_timer_masked (void) -{ - /* reset time */ - lastdec = READ_TIMER; /* capure current decrementer value time */ - timestamp = 0; /* start "advancing" time stamp from 0 */ -} - -#ifdef CFG_UDELAY - -static ulong get_timer_masked (void); -static ulong get_timer (ulong base); - -/* delay x useconds AND perserve advance timstamp value */ -void udelay (unsigned long usec) -{ - ulong tmo, tmp; - - if(usec >= 1000){ /* if "big" number, spread normalization to seconds */ - tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ - tmo *= CFG_HZ; /* find number of "ticks" to wait to achieve target */ - tmo /= 1000; /* finish normalize. */ - }else{ /* else small number, don't kill it prior to HZ multiply */ - tmo = usec * CFG_HZ; - tmo /= (1000*1000); - } - - tmp = get_timer (0); /* get current timestamp */ - if( (tmo + tmp) < tmp ) /* if setting this fordward will roll time stamp */ - reset_timer_masked (); /* reset "advancing" timestamp to 0, set lastdec value */ - else - tmo += tmp; /* else, set advancing stamp wake up time */ - - while (get_timer_masked () < tmo)/* loop till event */ - /*NOP*/; -} - -static ulong get_timer_masked (void) -{ - ulong now = READ_TIMER; /* current tick value */ - - if (lastdec >= now) { /* normal mode (non roll) */ - /* normal mode */ - timestamp += lastdec - now; /* move stamp fordward with absoulte diff ticks */ - } else { /* we have overflow of the count down timer */ - /* nts = ts + ld + (TLV - now) - * ts=old stamp, ld=time that passed before passing through -1 - * (TLV-now) amount of time after passing though -1 - * nts = new "advancing time stamp"...it could also roll and cause problems. - */ - timestamp += lastdec + TIMER_LOAD_VAL - now; - } - lastdec = now; - - return timestamp; -} - -static ulong get_timer (ulong base) -{ - return get_timer_masked () - base; -} - -#endif /* CFG_UDELAY */ - diff --git a/x-loader/cpu/arm926ejs/start.S b/x-loader/cpu/arm926ejs/start.S deleted file mode 100644 index 2211dae..0000000 --- a/x-loader/cpu/arm926ejs/start.S +++ /dev/null @@ -1,239 +0,0 @@ -/* - * armboot - Startup Code for ARM926EJS CPU-core - * - * Copyright (c) 2003 Texas Instruments - * - * ----- Adapted for OMAP1610 from ARM925t code ------ - * - * Copyright (c) 2001 Marius Gröger <mag@sysgo.de> - * Copyright (c) 2002 Alex Züpke <azu@sysgo.de> - * Copyright (c) 2002 Gary Jennejohn <gj@denx.de> - * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com> - * Copyright (c) 2003 Kshitij <kshitij@ti.com> - * Copyright (c) 2004 Jian Zhang <jzhang@ti.com> - * - * 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> -#if defined(CONFIG_OMAP1610) -#include <./configs/omap1510.h> -#endif - -/* - ************************************************************************* - * - * Jump vector table as in table 3.1 in [1] - * - ************************************************************************* - */ - - -.globl _start -_start: - b reset - ldr pc, _hang - ldr pc, _hang - ldr pc, _hang - ldr pc, _hang - ldr pc, _hang - ldr pc, _hang - ldr pc, _hang - -_hang: - .word do_hang - - .balignl 16,0xdeadbeef - - -/* - ************************************************************************* - * - * Startup Code (reset vector) - * - * do important init only if we don't start from memory! - * setup Memory and board specific bits prior to relocation. - * relocate armboot to ram - * setup stack - * - ************************************************************************* - */ - -_TEXT_BASE: - .word TEXT_BASE - -.globl _armboot_start -_armboot_start: - .word _start - -/* - * These are defined in the board-specific linker script. - */ -.globl _bss_start -_bss_start: - .word __bss_start - -.globl _bss_end -_bss_end: - .word _end - - -/* - * the actual reset code - */ - -reset: - /* - * set the cpu to SVC32 mode - */ - mrs r0,cpsr - bic r0,r0,#0x1f - orr r0,r0,#0xd3 - msr cpsr,r0 - - /* - * turn off the watchdog, unlock/diable sequence - */ - mov r1, #0xF5 - ldr r0, =WDTIM_MODE - strh r1, [r0] - mov r1, #0xA0 - strh r1, [r0] - - - /* - * mask all IRQs by setting all bits in the INTMR - default - */ - - mov r1, #0xffffffff - ldr r0, =REG_IHL1_MIR - str r1, [r0] - ldr r0, =REG_IHL2_MIR - str r1, [r0] - - /* - * we do sys-critical inits at reboot, - */ - bl cpu_init_crit - - /* - * relocate exception vectors to SRAM where ROM code expects - */ -#ifdef CFG_BOOT_CS0 - - adr r0, _start /* r0 <- current position of code */ - add r0, r0, #4 /* skip reset vector */ - mov r2, #36 /* r2 <- size of data (8+1 words) */ - add r2, r0, r2 /* r2 <- source end address */ - mov r1, #0x20000000 -next: - ldmia r0!, {r3-r10} /* copy from source address [r0] */ - stmia r1!, {r3-r10} /* copy to target address [r1] */ - cmp r0, r2 /* until source end address [r2] */ - ble next - -#endif - -relocate: /* relocate X-Loader to RAM */ - adr r0, _start /* r0 <- current position of code */ - ldr r1, _TEXT_BASE /* test if we run from flash or RAM */ - cmp r0, r1 /* don't reloc during debug */ - /*beq stack_setup*/ - - ldr r2, _armboot_start - ldr r3, _bss_start - sub r2, r3, r2 /* r2 <- size of armboot */ - add r2, r0, r2 /* r2 <- source end address */ - -copy_loop: - ldmia r0!, {r3-r10} /* copy from source address [r0] */ - stmia r1!, {r3-r10} /* copy to target address [r1] */ - cmp r0, r2 /* until source end address [r2] */ - ble copy_loop - - /* Set up the stack */ -stack_setup: - ldr r0, _TEXT_BASE /* upper 128 KiB: relocated X-Loader */ - sub sp, r0, #128 /* leave 32 words for abort-stack */ - -clear_bss: - ldr r0, _bss_start /* find start of bss segment */ - add r0, r0, #4 /* start at first byte of bss */ - ldr r1, _bss_end /* stop here */ - mov r2, #0x00000000 /* clear */ - -clbss_l:str r2, [r0] /* clear loop... */ - add r0, r0, #4 - cmp r0, r1 - bne clbss_l - - ldr pc, _start_armboot - -_start_armboot: - .word start_armboot - - -/* - ************************************************************************* - * - * CPU_init_critical registers - * - * setup important registers - * setup memory timing - * - ************************************************************************* - */ - - -cpu_init_crit: - /* - * flush v4 I/D caches - */ - mov r0, #0 - mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ - mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ - - /* - * disable MMU stuff and caches - */ - mrc p15, 0, r0, c1, c0, 0 - bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ - bic r0, r0, #0x00000087 /* clear bits 7, 2:0 (B--- -CAM) */ - orr r0, r0, #0x00000002 /* set bit 2 (A) Align */ - orr r0, r0, #0x00001000 /* set bit 12 (I) I-Cache */ - mcr p15, 0, r0, c1, c0, 0 - - /* - * Go setup Memory and board specific bits prior to relocation. - */ - mov ip, lr /* perserve link reg across call */ - bl platformsetup /* go setup pll,mux,memory */ - mov lr, ip /* restore link */ - mov pc, lr /* back to my caller */ - -/* - * exception handler - */ - .align 5 -do_hang: - ldr sp, _TEXT_BASE /* use 32 words abort stack */ - bl hang /* hang and never return */ - - |