From 5a3f22617b02ec366461be21765e636e6bdd0222 Mon Sep 17 00:00:00 2001
From: inmarket <andrewh@inmarket.com.au>
Date: Mon, 6 Oct 2014 17:05:16 +1000
Subject: Add support for FreeRTOS into make system

---
 boards/base/RaspberryPi/example-FreeRTOS/startup.s | 102 ---------------------
 1 file changed, 102 deletions(-)
 delete mode 100644 boards/base/RaspberryPi/example-FreeRTOS/startup.s

(limited to 'boards/base/RaspberryPi/example-FreeRTOS/startup.s')

diff --git a/boards/base/RaspberryPi/example-FreeRTOS/startup.s b/boards/base/RaspberryPi/example-FreeRTOS/startup.s
deleted file mode 100644
index 286f396c..00000000
--- a/boards/base/RaspberryPi/example-FreeRTOS/startup.s
+++ /dev/null
@@ -1,102 +0,0 @@
-.extern	system_init
-.extern __bss_start
-.extern __bss_end
-.extern vFreeRTOS_ISR
-.extern vPortYieldProcessor
-.extern DisableInterrupts
-.extern main
-	.section .init
-	.globl _start
-;; 
-_start:
-	;@ All the following instruction should be read as:
-	;@ Load the address at symbol into the program counter.
-	
-	ldr	pc,reset_handler		;@ 	Processor Reset handler 		-- we will have to force this on the raspi!
-	;@ Because this is the first instruction executed, of cause it causes an immediate branch into reset!
-	
-	ldr pc,undefined_handler	;@ 	Undefined instruction handler 	-- processors that don't have thumb can emulate thumb!
-    ldr pc,swi_handler			;@ 	Software interrupt / TRAP (SVC) -- system SVC handler for switching to kernel mode.
-    ldr pc,prefetch_handler		;@ 	Prefetch/abort handler.
-    ldr pc,data_handler			;@ 	Data abort handler/
-    ldr pc,unused_handler		;@ 	-- Historical from 26-bit addressing ARMs -- was invalid address handler.
-    ldr pc,irq_handler			;@ 	IRQ handler
-    ldr pc,fiq_handler			;@ 	Fast interrupt handler.
-
-	;@ Here we create an exception address table! This means that reset/hang/irq can be absolute addresses
-reset_handler:      .word reset
-undefined_handler:  .word undefined_instruction
-swi_handler:        .word vPortYieldProcessor
-prefetch_handler:   .word prefetch_abort
-data_handler:       .word data_abort
-unused_handler:     .word unused
-irq_handler:        .word vFreeRTOS_ISR
-fiq_handler:        .word fiq
-
-reset:
-	;@	In the reset handler, we need to copy our interrupt vector table to 0x0000, its currently at 0x8000
-
-	mov r0,#0x8000								;@ Store the source pointer
-    mov r1,#0x0000								;@ Store the destination pointer.
-
-	;@	Here we copy the branching instructions
-    ldmia r0!,{r2,r3,r4,r5,r6,r7,r8,r9}			;@ Load multiple values from indexed address. 		; Auto-increment R0
-    stmia r1!,{r2,r3,r4,r5,r6,r7,r8,r9}			;@ Store multiple values from the indexed address.	; Auto-increment R1
-
-	;@	So the branches get the correct address we also need to copy our vector table!
-    ldmia r0!,{r2,r3,r4,r5,r6,r7,r8,r9}			;@ Load from 4*n of regs (8) as R0 is now incremented.
-    stmia r1!,{r2,r3,r4,r5,r6,r7,r8,r9}			;@ Store this extra set of data.
-
-
-	;@	Set up the various STACK pointers for different CPU modes
-    ;@ (PSR_IRQ_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
-    mov r0,#0xD2
-    msr cpsr_c,r0
-    mov sp,#0x8000
-
-    ;@ (PSR_FIQ_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
-    mov r0,#0xD1
-    msr cpsr_c,r0
-    mov sp,#0x4000
-
-    ;@ (PSR_SVC_MODE|PSR_FIQ_DIS|PSR_IRQ_DIS)
-    mov r0,#0xD3
-    msr cpsr_c,r0
-	mov sp,#0x8000000
-
-	ldr r0, =__bss_start
-	ldr r1, =__bss_end
-
-	mov r2, #0
-
-zero_loop:
-	cmp 	r0,r1
-	it		lt
-	strlt	r2,[r0], #4
-	blt		zero_loop
-
-	bl 		DisableInterrupts
-	
-	
-	;@ 	mov	sp,#0x1000000
-	b main									;@ We're ready?? Lets start main execution!
-	.section .text
-
-undefined_instruction:
-	b undefined_instruction
-
-prefetch_abort:
-	b prefetch_abort
-
-data_abort:
-	b data_abort
-
-unused:
-	b unused
-
-fiq:
-	b fiq
-	
-hang:
-	b hang
-
-- 
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