pgm_eb55

Atmel公司的ARM7处理器硬件驱动

|*******************************************************************
|First part: Master clock frequency switching
|*******************************************************************

| Define Top of memory (needed if you are working with Multi-ICE )
$top_of_memory=0x2040000

|Set up the Clock frequency to run at 32Mhz with PLL

|- Enable the Main Oscillator(16Mhz)
0xFFFF4020= 0x03080002

|- Reading the APMC Status register to detect when the oscillator is stabilized
r0=0xFFFF4030
r1=*r0 ; while r1==0x0

|- Commuting from Slow Clock to Main Oscillator (16Mhz)
0xFFFF4020 = 0x03084002

|- Setup the PLL
0xFFFF4020 = 0x03084102

|- Reading the APMC Status register to detect when the PLL is stabilized
r0=0xFFFF4030
r1=*r0 ; while r1==0x1

|- Commuting from 16Mhz to PLL @ 32MHz
0xFFFF4020 = 0x03088102

|- Now the Master clock is the output of PLL @ 32MHz

|*******************************************************************
|Second part: Boot program loading to the flash memory
|*******************************************************************

|Setup EBI to support all connected memories
|Setup for EB55

| Setup EBI to support all connected memories
| Setup for EB55
0xFFE00000=0x01002529
0xFFE00004=0x02002121
0xFFE00020=0x1

| Load Flash downloader + arguments to program the boot
load ../../../tools/flash_downloader/flash_16x4/ext_sram/flash_16x4.axf boot_eb55_Data/flash/boot_eb55.bin 0x1000000
go

| Load Flash downloader + arguments to program Angel
load ../../../tools/flash_downloader/flash_16x4/ext_sram/flash_16x4.axf ../../../debug_monitor/angel/image/sram_eb55/angel_at91.rom 0x1006000
go

| Load Flash downloader + arguments to program default user application
load ../../../tools/flash_downloader/flash_16x4/ext_sram/flash_16x4.axf ../../../projects/led_swing_eb55/led_swing_Data/flash/led_swing.bin 0x1100000
go