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authorhenryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2007-11-11 02:08:38 +0000
committerhenryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2007-11-11 02:08:38 +0000
commit13be0cd28e3e41a2415cd0d01bad8ecb0909e637 (patch)
tree3379ae180c0ab7d44c0cea2c4ab5c68b4e9217eb /openpicc/os/boot/Cstartup_app.S
parent39cb47ed0951074afb24687fcb6e66947b4f8ef8 (diff)
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
Diffstat (limited to 'openpicc/os/boot/Cstartup_app.S')
-rw-r--r--openpicc/os/boot/Cstartup_app.S194
1 files changed, 0 insertions, 194 deletions
diff --git a/openpicc/os/boot/Cstartup_app.S b/openpicc/os/boot/Cstartup_app.S
deleted file mode 100644
index 448cc93..0000000
--- a/openpicc/os/boot/Cstartup_app.S
+++ /dev/null
@@ -1,194 +0,0 @@
-/* Cstartup header for the application to be started by at91dfu
- * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
- *
- * 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
- *
- */
-
-
-//#define DEBUG_LL
-
- .equ AIC_FVR, (260)
- .equ AIC_EOICR, (304)
- .equ AT91C_BASE_AIC, (0xFFFFF000)
- .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_BASE_PIOA 0xFFFFF400
-#define AT91C_BASE_TC0 0xFFFA0000
-#define AT91C_TC_SWTRG (1 << 2)
-#define PIOA_SODR 0x30
-#define PIOA_CODR 0x34
-#define PIOA_PDSR 0x3c
-#define PIOA_ISR 0x4c
-#define PIOA_IDR 0x44
-#define PIO_DATA (1 << 27)
-#define TC_CCR 0x00
-
-
-#define PIO_LED1 (1 << 25) /* this only works on OpenPICC, not Olimex */
-
-#ifdef DEBUG_LL
-/* Debugging macros for switching on/off LED1 (green) */
-#define PIOA_PER 0xFFFFF400
-#define PIOA_OER 0xFFFFF410
- .macro led1on
- ldr r2, =AT91C_BASE_PIOA
- mov r1, #PIO_LED1
- str r1, [r2, #PIOA_CODR]
- .endm
- .macro led1off
- ldr r2, =AT91C_BASE_PIOA
- mov r1, #PIO_LED1
- str r1, [r2, #PIOA_SODR]
- .endm
- .macro ledinit
- ldr r2, =PIOA_PER
- mov r1, #PIO_LED1
- str r1, [r2]
- ldr r2, =PIOA_OER
- str r1, [r2]
- led1off
- .endm
-#else
- .macro ledinit
- .endm
- .macro led1on
- .endm
- .macro led1off
- .endm
-#endif
-
- .global _startup
- .func _startup
-_startup:
- /* Relocate .data section (copy from Flash to RAM) */
- ldr r1, =_etext
- ldr r2, =_data
- ldr r3, =_edata
-loop_r: cmp r2, r3
- ldrlo r0, [r1], #4
- strlo r0, [r2], #4
- blo loop_r
-
- /* Clear .bss section (Zero init) */
- mov r0, #0
- ldr r1, =__bss_start__
- ldr r2, =__bss_end__
-loop_z: cmp r1, r2
- strlo r0, [r1], #4
- blo loop_z
-
- /* initialize FIQ mode registers */
- msr CPSR_c, #ARM_MODE_FIQ | I_BIT | F_BIT
- ldr r10, =AT91C_BASE_PIOA
- ldr r12, =AT91C_BASE_TC0
- mov r9, #AT91C_TC_SWTRG
- msr CPSR_c, #ARM_MODE_SVC
-
- led1on
-
- /* prepare C function call to main */
- mov r0, #0 /* argc = 0 */
- ldr lr, =exit
- ldr r10, =main
-
- bx r10
-
- .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
-
-
-#define LED_TRIGGER
-#define CALL_PIO_IRQ_DEMUX
-
- .text
- .arm
- .section .fastrun, "ax"
-
- .global fiq_handler
- .func fiq_handler
-fiq_handler:
- /* code that uses pre-initialized FIQ reg */
- /* r8 AT91C_BASE_AIC (dfu init)
- r9 AT91C_TC_SWTRG
- r10 AT91C_BASE_PIOA
- r11 tmp
- r12 AT91C_BASE_TC0
- r13 stack
- r14 lr
- */
-
- ldr r8, [r10, #PIOA_ISR]
- tst r8, #PIO_DATA /* check for PIO_DATA change */
- ldrne r11, [r10, #PIOA_PDSR]
- tstne r11, #PIO_DATA /* check for PIO_DATA == 1 */
- strne r9, [r12, #TC_CCR] /* software trigger */
-#ifdef LED_TRIGGER
- movne r11, #PIO_LED1
- strne r11, [r10, #PIOA_CODR] /* enable LED */
-#endif
-
-#if 1
- movne r11, #PIO_DATA
- strne r11, [r10, #PIOA_IDR] /* disable further PIO_DATA FIQ */
-#endif
-
- /*- Mark the End of Interrupt on the AIC */
- ldr r11, =AT91C_BASE_AIC
- str r11, [r11, #AIC_EOICR]
-
-#ifdef LED_TRIGGER
- mov r11, #PIO_LED1
- str r11, [r10, #PIOA_SODR] /* disable LED */
-#endif
-
-#ifdef CALL_PIO_IRQ_DEMUX
- /* push r0, r1-r3, r12, r14 onto FIQ stack */
- stmfd sp!, { r0-r3, r12, lr}
- mov r0, r8
-
- /* enable interrupts while handling demux */
- /* msr CPSR_c, #F_BIT | ARM_MODE_SVC */
-
- /* Call C function, give PIOA_ISR as argument */
- ldr r11, =__pio_irq_demux
- mov r14, pc
- bx r11
-
- /* msr CPSR_c, #I_BIT | F_BIT | ARM_MODE_FIQ */
- ldmia sp!, { r0-r3, r12, lr }
-#endif
-
- /*- Restore the Program Counter using the LR_fiq directly in the PC */
- subs pc, lr, #4
-
- .size fiq_handler, . - fiq_handler
- .endfunc
- .end
-
personal git repositories of Harald Welte. Your mileage may vary