From 13be0cd28e3e41a2415cd0d01bad8ecb0909e637 Mon Sep 17 00:00:00 2001 From: henryk Date: Sun, 11 Nov 2007 02:08:38 +0000 Subject: Revert 313 and 315 again, I'm too stupid to get DFU working, focus on the application code first git-svn-id: https://svn.openpcd.org:2342/trunk@316 6dc7ffe9-61d6-0310-9af1-9938baff3ed1 --- openpicc/os/boot/Cstartup.S | 450 -------------------------------------------- 1 file changed, 450 deletions(-) delete mode 100644 openpicc/os/boot/Cstartup.S (limited to 'openpicc/os/boot/Cstartup.S') diff --git a/openpicc/os/boot/Cstartup.S b/openpicc/os/boot/Cstartup.S deleted file mode 100644 index 83e7696..0000000 --- a/openpicc/os/boot/Cstartup.S +++ /dev/null @@ -1,450 +0,0 @@ -/* AT91SAM7 low-level startup outines for OpenPCD / OpenPICC DFU loader - * (C) 2006 by Harald Welte - * - * 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 - * - */ - -/*------------------------------------------------------------------------------ -//*- ATMEL Microcontroller Software Support - ROUSSET - -//*------------------------------------------------------------------------------ -//* The software is delivered "AS IS" without warranty or condition of any -//* kind, either express, implied or statutory. This includes without -//* limitation any warranty or condition with respect to merchantability or -//* fitness for any particular purpose, or against the infringements of -//* intellectual property rights of others. -//*----------------------------------------------------------------------------- -//*- File source : Cstartup.s -//*- Object : Generic CStartup for KEIL and GCC No Use REMAP -//*- Compilation flag : None -//*- -//*- 1.0 18/Oct/04 JPP : Creation -//*- 1.1 21/Feb/05 JPP : Set Interrupt -//*- 1.1 01/Apr/05 JPP : save SPSR -//*-----------------------------------------------------------------------------*/ - -/* Enable DFU by press of hardware POI_BOOTLDR switch */ -#define CONFIG_DFU_SWITCH - -/* Enable DFU by magic value in RAM and software reset */ -#define CONFIG_DFU_MAGIC - -//#define DEBUG_LL - -#define PIOA_PER 0xFFFFF400 -#define PIOA_OER 0xFFFFF410 -#define PIOA_SODR 0xFFFFF430 -#define PIOA_CODR 0xFFFFF434 -#define LED1 25 /* this only works on OpenPICC, not Olimex */ - -#ifdef DEBUG_LL -/* Debugging macros for switching on/off LED1 (green) */ - .macro led1on - ldr r2, =PIOA_CODR - mov r1, #(1 << LED1) - str r1, [r2] - .endm - .macro led1off - ldr r2, =PIOA_SODR - mov r1, #(1 << LED1) - str r1, [r2] - .endm - .macro ledinit - ldr r2, =PIOA_PER - mov r1, #(1 << LED1) - str r1, [r2] - ldr r2, =PIOA_OER - str r1, [r2] - led1off - .endm -#else - .macro ledinit - .endm - .macro led1on - .endm - .macro led1off - .endm -#endif - - .equ IRQ_Stack_Size, 0x00000400 - .equ FIQ_Stack_Size, 0x00000400 - - .equ AIC_IVR, (256) - .equ AIC_FVR, (260) - .equ AIC_EOICR, (304) - .equ AIC_MCR_RCR, (0xf00) - .equ AT91C_BASE_AIC, (0xFFFFF000) - .equ AT91C_PMC_PCER, (0xFFFFFC10) - .equ AT91C_BASE_PIOA, (0xFFFFF400) - .equ AT91C_ID_PIOA, (2) - .equ PIOA_PDSR, (0x3c) -#if defined(PCD) - .equ PIO_BOOTLDR, (1 << 27) -#elif defined(PICC) - .equ PIO_BOOTLDR, (1 << 6) -#elif defined(OLIMEX) - .equ PIO_BOOTLDR, (1 << 19) -#else -#error please define PIO_BOOTLDR -#endif - - -/* #include "AT91SAM7S64_inc.h" */ - -/* Exception Vectors in RAM */ - - .text - .arm - .section .vectram, "ax" - - .global _remap_call_dfu - .func _remap_call_dfu -_remap_call_dfu: - led1on - /* Remap RAM to 0x00000000 for DFU */ - ldr r1, =AT91C_BASE_AIC - mov r2, #0x01 - str r2, [r1, #AIC_MCR_RCR] - - ldr r4, =dfu_main - bx r4 - - .size _remap_call_dfu, . - _remap_call_dfu - .endfunc - - -#;------------------------------------------------------------------------------ -#;- Section Definition -#;----------------- -#;- Section -#;- .internal_ram_top Top_Stack: used by the cstartup for vector initalisation -#;- management defined by ld and affect from ldscript -#;------------------------------------------------------------------------------ - .section .internal_ram_top - .code 32 - .align 0 - .global Top_Stack -Top_Stack: - -/*------------------------------------------------------------------------------ -*- Area Definition -*------------------------------------------------------------------------------ -* .text is used instead of .section .text so it works with arm-aout too. */ - .section .reset - .text -reset: -/*------------------------------------------------------------------------------ -//*- Exception vectors -//*-------------------- -//*- These vectors can be read at address 0 or at RAM address -//*- They ABSOLUTELY requires to be in relative addresssing mode in order to -//*- guarantee a valid jump. For the moment, all are just looping. -//*- If an exception occurs before remap, this would result in an infinite loop. -//*- To ensure if a exeption occurs before start application to infinite loop. -//*------------------------------------------------------------------------------*/ - - B InitReset /* 0x00 Reset handler */ -undefvec: - B undefvec /* 0x04 Undefined Instruction */ -swivec: - B swivec /* 0x08 Software Interrupt */ -pabtvec: - B pabtvec /* 0x0C Prefetch Abort */ -dabtvec: - b dabtvec /* 0x10 Data Abort */ -rsvdvec: - b rsvdvec /* 0x14 reserved */ -irqvec: - b IRQ_Handler_Entry /* 0x18 IRQ */ -fiqvec: - ldr pc, [pc, #-0xF20] /* 0x1c FIQ */ - -dfu_state_dummy: - .word 0 - - .global IRQ_Handler_Entry - .func IRQ_Handler_Entry - -FIQ_Handler_Entry: - -/*- Switch in SVC/User Mode to allow User Stack access for C code */ -/* because the FIQ is not yet acknowledged*/ - -/*- Save and r0 in FIQ_Register */ - mov r9, r0 - ldr r0, [r8, #AIC_FVR] - msr CPSR_c, #I_BIT | F_BIT | ARM_MODE_SVC - - /*- Save scratch/used registers and LR in User Stack */ - stmfd sp!, { r1-r3, r12, lr} - - /*- Branch to the routine pointed by the AIC_FVR */ - mov r14, pc - bx r0 - - /*- Restore scratch/used registers and LR from User Stack */ - ldmia sp!, { r1-r3, r12, lr} - - /*- Leave Interrupts disabled and switch back in FIQ mode */ - msr CPSR_c, #I_BIT | F_BIT | ARM_MODE_FIQ - - /*- Restore the R0 ARM_MODE_SVC register */ - mov r0,r9 - - /*- Restore the Program Counter using the LR_fiq directly in the PC */ - subs pc, lr, #4 - -IRQ_Handler_Entry: - - /*- Manage Exception Entry */ - /*- Adjust and save LR_irq in IRQ stack */ - sub lr, lr, #4 - stmfd sp!, {lr} - - /*- Save SPSR need to be saved for nested interrupt */ - mrs r14, SPSR - stmfd sp!, {r14} - - /*- Save and r0 in IRQ stack */ - stmfd sp!, {r0} - - /*- Write in the IVR to support Protect Mode */ - /*- No effect in Normal Mode */ - /*- De-assert the NIRQ and clear the source in Protect Mode */ - ldr r14, =AT91C_BASE_AIC - ldr r0 , [r14, #AIC_IVR] - str r14, [r14, #AIC_IVR] - - /*- Enable Interrupt and Switch in Supervisor Mode */ - msr CPSR_c, #ARM_MODE_SVC - - /*- Save scratch/used registers and LR in User Stack */ - stmfd sp!, { r1-r3, r12, r14} - - /*- Branch to the routine pointed by the AIC_IVR */ - mov r14, pc - bx r0 - - /*- Restore scratch/used registers and LR from User Stack*/ - ldmia sp!, { r1-r3, r12, r14} - - /*- Disable Interrupt and switch back in IRQ mode */ - msr CPSR_c, #I_BIT | ARM_MODE_IRQ - - /*- Mark the End of Interrupt on the AIC */ - ldr r14, =AT91C_BASE_AIC - str r14, [r14, #AIC_EOICR] - - /*- Restore SPSR_irq and r0 from IRQ stack */ - ldmia sp!, {r0} - - /*- Restore SPSR_irq and r0 from IRQ stack */ - ldmia sp!, {r14} - msr SPSR_cxsf, r14 - - /*- Restore adjusted LR_irq from IRQ stack directly in the PC */ - ldmia sp!, {pc}^ - - .size IRQ_Handler_Entry, . - IRQ_Handler_Entry - .endfunc - .align 0 -.RAM_TOP: - .word Top_Stack - - .global _startup - .func _startup -InitReset: -/*------------------------------------------------------------------------------ -/*- Low level Init (PMC, AIC, ? ....) by C function AT91F_LowLevelInit -/*------------------------------------------------------------------------------*/ - .extern AT91F_LowLevelInit -/*- minumum C initialization */ -/*- call AT91F_LowLevelInit( void) */ - - ldr r13,.RAM_TOP /* temporary stack in internal RAM */ -/*--Call Low level init function in ABSOLUTE through the Interworking */ - ldr r0,=AT91F_LowLevelInit - mov lr, pc - bx r0 - ledinit - -/*------------------------------------------------------------------------------ -//*- Top of Stack Definition -//*------------------------- -//*- Interrupt and Supervisor Stack are located at the top of internal memory in -//*- order to speed the exception handling context saving and restoring. -//*- ARM_MODE_SVC (Application, C) Stack is located at the top of the external memory. -//*------------------------------------------------------------------------------*/ - - .EQU ARM_MODE_FIQ, 0x11 - .EQU ARM_MODE_IRQ, 0x12 - .EQU ARM_MODE_SVC, 0x13 - - .EQU I_BIT, 0x80 - .EQU F_BIT, 0x40 - - -#define AT91C_RSTC_RSR 0xFFFFFD04 -#define AT91C_RSTC_RSTTYP_SOFTWARE (0x03 << 8) -#define DFU_STATE_appDETACH 1 - - -/*------------------------------------------------------------------------------ -//*- Setup the stack for each mode -//*-------------------------------*/ - mov r0,r13 - -/*- Set up Fast Interrupt Mode and set FIQ Mode Stack*/ - msr CPSR_c, #ARM_MODE_FIQ | I_BIT | F_BIT - mov r13, r0 - sub r0, r0, #FIQ_Stack_Size - -/*- Init the FIQ register*/ - ldr r8, =AT91C_BASE_AIC - -/*- Set up Interrupt Mode and set IRQ Mode Stack*/ - msr CPSR_c, #ARM_MODE_IRQ | I_BIT | F_BIT - mov r13, r0 /* Init stack IRQ */ - sub r0, r0, #IRQ_Stack_Size - -/*- Set up Supervisor Mode and set Supervisor Mode Stack*/ - msr CPSR_c, #ARM_MODE_SVC | I_BIT | F_BIT - mov r13, r0 /* Init stack Sup */ - -/* - Enable Interrupts and FIQ */ - msr CPSR_c, #ARM_MODE_SVC - -#ifdef CONFIG_DFU_MAGIC - ldr r1, =AT91C_RSTC_RSR - ldr r2, [r1] - #and r2, r2, AT91C_RSTC_RSTTYP - tst r2, #AT91C_RSTC_RSTTYP_SOFTWARE - beq dfu_magic_end - - ldr r1, =dfu_state - ldr r2, [r1] - cmp r2, #DFU_STATE_appDETACH - beq _reloc_dfu -dfu_magic_end: -#endif - -# Relocate DFU .data.shared section (Copy from ROM to RAM) - LDR R1, =_etext - LDR R2, =_data_shared - LDR R3, =_edata_shared -LoopRelDS: CMP R2, R3 - LDRLO R0, [R1], #4 - STRLO R0, [R2], #4 - BLO LoopRelDS - -/* -# Clear DFU .bss section (Zero init) - MOV R0, #0 - LDR R1, =__bss_start__ - LDR R2, =__bss_end__ -LoopZI: CMP R1, R2 - STRLO R0, [R1], #4 - BLO LoopZI -*/ - - /* prepare c function call to main */ - mov r0, #0 /* argc = 0 */ - ldr lr, =exit - ldr r10, =0x00104000 - -#ifdef CONFIG_DFU_SWITCH - /* check whether bootloader button is pressed */ - ldr r1, =AT91C_PMC_PCER - mov r2, #(1 << AT91C_ID_PIOA) - str r2, [r1] - - ldr r1, =AT91C_BASE_PIOA - ldr r2, [r1, #PIOA_PDSR] - tst r2, #PIO_BOOTLDR - bne _reloc_dfu -#endif - - bx r10 - -_reloc_dfu: - /* Relocate DFU .data section (Copy from ROM to RAM) */ - LDR R1, =_data_flash - LDR R2, =_data - LDR R3, =_edata -LoopRel: CMP R2, R3 - LDRLO R0, [R1], #4 - STRLO R0, [R2], #4 - BLO LoopRel - - /* Clear DFU .bss section (Zero init) */ - MOV R0, #0 - LDR R1, =__bss_start__ - LDR R2, =__bss_end__ -LoopZI: CMP R1, R2 - STRLO R0, [R1], #4 - BLO LoopZI - - /* relocate DFU .text into RAM */ - ldr r1, =0x00100000 - ldr r2, =0x00200000 - ldr r3, =_etext - add r3, r3, r2 -loop_rel_t: cmp r2, r3 - ldrlo r4, [r1], #4 - strlo r4, [r2], #4 - blo loop_rel_t - ldr r4, =_remap_call_dfu - bx r4 - - .size _startup, . - _startup - .endfunc - -/* "exit" dummy to avoid sbrk write read etc. needed by the newlib default "exit" */ - .global exit - .func exit -exit: - b . - .size exit, . - exit - .endfunc - -/*--------------------------------------------------------------- -//* ?EXEPTION_VECTOR -//* This module is only linked if needed for closing files. -//*---------------------------------------------------------------*/ - .global AT91F_Default_FIQ_handler - .func AT91F_Default_FIQ_handler -AT91F_Default_FIQ_handler: - b AT91F_Default_FIQ_handler - .size AT91F_Default_FIQ_handler, . - AT91F_Default_FIQ_handler - .endfunc - - .global AT91F_Default_IRQ_handler - .func AT91F_Default_IRQ_handler -AT91F_Default_IRQ_handler: - b AT91F_Default_IRQ_handler - .size AT91F_Default_IRQ_handler, . - AT91F_Default_IRQ_handler - .endfunc - - .global AT91F_Spurious_handler - .func AT91F_Spurious_handler -AT91F_Spurious_handler: - b AT91F_Spurious_handler - .size AT91F_Spurious_handler, . - AT91F_Spurious_handler - .endfunc - - - - .end - -- cgit v1.2.3