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bootloader no peripheral initialization

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git-svn-id: http://moon:8086/svn/mips@72 a8ebac50-d88d-4704-bea3-6648445a41b3
This commit is contained in:
jens
2017-01-11 08:07:33 +00:00
parent bba98f5677
commit f9eb889616
3 changed files with 2 additions and 25 deletions
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src/bootloader/bootloader.ld
-8
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@@ -7,14 +7,6 @@ MEMORY
} }
stack_ptr = 0x7FFFEFF0; stack_ptr = 0x7FFFEFF0;
baudrate = 0x0D;
sys_led_port = 0xA0000000;
sys_uart_data = 0xA0010000;
sys_uart_stat = 0xA0010004;
sys_uart_baud = 0xA0010008;
sys_timer_usec = 0xA000008;
sys_timer_sec = 0xA000000C;
SECTIONS SECTIONS
{ {
src/bootloader/kernel_boot.S
+2 -12
View File
@@ -17,20 +17,10 @@ _exc_handler:
.set noreorder .set noreorder
# Set Error LED and ExcCode LEDs
# Get Cause
mfc0 $26, $13
li $27, 0xC0000000
srl $26, 2
andi $26, 0x000F
or $26, $27
la $27, sys_led_port
sw $26, 0($27)
# wait for all interrupts = 0 # wait for all interrupts = 0
$w4x: mfc0 $26, $13 $w4x: mfc0 $26, $13
nop nop
srl $26, 8 srl $26, 8
andi $26, 0xFF andi $26, 0xFF
bnez $26, $w4x bnez $26, $w4x
nop nop
src/bootloader/startup_boot.S
-5
View File
@@ -41,11 +41,6 @@ _init:
jalr $k0 jalr $k0
nop nop
# set uart
la $26, sys_uart_baud
addiu $27, $0, baudrate
sw $27, 0($26)
la $26, main la $26, main
jalr $26 jalr $26