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This commit is contained in:
Travis Geiselbrecht
2010-05-06 12:12:05 -07:00
parent aaf19ef6b3
commit 1b9468ebf9
7 changed files with 129 additions and 29 deletions
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37
arch/avr32/arch.c Normal file
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@@ -0,0 +1,37 @@
/*
* Copyright (c) 2009 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <debug.h>
#include <arch.h>
void arch_early_init(void)
{
}
void arch_init(void)
{
}
void arch_quiesce(void)
{
}

47
arch/avr32/crt0.S
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2009 Travis Geiselbrecht
* Copyright (c) 2009-2010 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
@@ -20,13 +20,48 @@
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <platform/at32ap7.h>
.section ".text.boot"
.globl _start
_start:
mov r12, 4
mov r12, r11
lddpc sp, .Linit_stack_top_addr
/* print a char */
lddpc r0, .Luart_base
mov r1, 'a'
st.w r0[0x1c],r1
0:
mov r12, 1
mov r11, 'a'
rcall uart_putc
rjmp 0b
rcall kmain
rjmp .
.text
test:
.word 99
.align 2
.Luart_base:
.long USART1_BASE
.Linit_stack_top_addr:
.long init_stack_top
.section ".bss"
.align 2
init_stack:
.skip 1024
init_stack_top:
.section ".rodata"
.align 2
/* define the heap end as read-only data containing the end defined in the
* linker script. other archs that use dynamic memory length discovery can make
* this read-write and update it during init.
*/
.global _heap_end
_heap_end:
.int _end_of_ram

4
arch/avr32/rules.mk
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@@ -12,9 +12,9 @@ BOOTOBJS += \
OBJS += \
$(LOCAL_DIR)/ops.o \
$(LOCAL_DIR)/thread.o \
$(LOCAL_DIR)/arch.o \
# $(LOCAL_DIR)/arch.Ao \
$(LOCAL_DIR)/asm.o \
# $(LOCAL_DIR)/asm.o \
$(LOCAL_DIR)/cache.o \
$(LOCAL_DIR)/cache-ops.o \
$(LOCAL_DIR)/exceptions.o \

2
kernel/main.c
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@@ -58,6 +58,8 @@ static void call_constructors(void)
void kmain(void) __NO_RETURN __EXTERNALLY_VISIBLE;
void kmain(void)
{
puts("top of kmain\n");
// get us into some sort of thread context
thread_init_early();

45
platform/at32ap7/debug.c
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@@ -29,77 +29,79 @@
#include <platform/debug.h>
#include <arch/ops.h>
#include <lib/cbuf.h>
#include <platform/at32ap7.h>
#if 0
static cbuf_t debug_buf;
static timer_t debug_timer;
#endif
static void write_uart_reg(int uart, int reg, unsigned char data)
void write_uart_reg(int uart, int reg, unsigned char data)
{
unsigned long base;
int mul = 4;
switch(uart) {
case 0: base = UART0_BASE; break;
case 1: base = UART1_BASE; break;
case 2: base = UART2_BASE; break;
case 0: base = USART0_BASE; break;
case 1: base = USART1_BASE; break;
case 2: base = USART2_BASE; break;
case 3: base = USART3_BASE; break;
default: return;
}
*(volatile unsigned char *)(base + reg * mul) = data;
*REG32(base + reg * mul) = data;
}
static unsigned char read_uart_reg(int uart, int reg)
unsigned char read_uart_reg(int uart, int reg)
{
unsigned long base;
int mul = 4;
switch(uart) {
case 0: base = UART0_BASE; break;
case 1: base = UART1_BASE; break;
case 2: base = UART2_BASE; break;
case 0: base = USART0_BASE; break;
case 1: base = USART1_BASE; break;
case 2: base = USART2_BASE; break;
case 3: base = USART3_BASE; break;
default: return 0;
}
return *(volatile unsigned char *)(base + reg * mul);
return *REG32(base + reg * mul);
}
static int uart_init(void)
{
/* clear the tx & rx fifo and disable */
write_uart_reg(0, UART_FCR, 0x6);
// write_uart_reg(0, UART_FCR, 0x6);
return 0;
}
static int uart_putc(int port, char c )
int uart_putc(int port, char c )
{
while (!(read_uart_reg(port, UART_LSR) & (1<<6))) // wait for the shift register to empty
;
// while (!(read_uart_reg(port, UART_CSR) & (1<<9))) // wait for the shift register to empty
// ;
write_uart_reg(port, UART_THR, c);
// *REG32(USART1_BASE + 0x1c) = c;
return 0;
}
static int uart_getc(int port, bool wait) /* returns -1 if no data available */
{
if (wait) {
while (!(read_uart_reg(port, UART_LSR) & (1<<0))) // wait for data to show up in the rx fifo
while (!(read_uart_reg(port, UART_CSR) & (1<<0))) // wait for data to show up in the rx fifo
;
} else {
if (!(read_uart_reg(port, UART_LSR) & (1<<0)))
if (!(read_uart_reg(port, UART_CSR) & (1<<0)))
return -1;
}
return read_uart_reg(port, UART_RHR);
}
#endif
void _dputc(char c)
{
#if 0
if (c == '\n')
uart_putc(0, '\r');
uart_putc(0, c);
#endif
uart_putc(1, '\r');
uart_putc(1, c);
}
#if 0
@@ -124,6 +126,7 @@ int dgetc(char *c, bool wait)
len = cbuf_read(&debug_buf, c, 1, wait);
return len;
#endif
return 0;
}
void debug_dump_regs(void)

17
platform/at32ap7/include/platform/at32ap7.h
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@@ -112,5 +112,22 @@
#define INT_USBA INT_VECTOR(31, 0)
#define INT_EBI INT_VECTOR(32, 0)
/* UART */
#define UART_CR (0)
#define UART_MR (1)
#define UART_IER (2)
#define UART_IDR (3)
#define UART_IMR (4)
#define UART_CSR (5)
#define UART_RHR (6)
#define UART_THR (7)
#define UART_BRGR (8)
#define UART_RTOR (9)
#define UART_TTGR (10)
#define UART_FIDI (16)
#define UART_NER (17)
#define UART_IFR (19)
#define UART_MAN (20)
#endif

6
scripts/do-ngw100-test Executable file
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@@ -0,0 +1,6 @@
#!/bin/sh
export PROJECT=ngw100-test
make &&
cp build-ngw100-test/lk.bin /tftproot/6300A8C0.img