am,mycpu: refactor directory structure

am/src/mycpu/include/mycpu.h

@@ -1,5 +0,0 @@
-#include <klib-macros.h>
-
-#define PMEM_SIZE (128 * 1024 * 1024)
-#define PMEM_END  ((uintptr_t)&_pmem_start + PMEM_SIZE)
-extern char _pmem_start;

am/src/mycpu/input.c

@@ -1,6 +1,6 @@
 #include <am.h>
 
 void __am_input_keybrd(AM_INPUT_KEYBRD_T *kbd) {
-
-
+  kbd->keydown = 0;
+  kbd->keycode = AM_KEY_NONE;
 }

am/src/mycpu/scripts/section.ld

@@ -1,33 +0,0 @@
-_pmem_start = 0x80000000;
-
-ENTRY(_start)
-
-SECTIONS {
-  . = _pmem_start + 0x100000;
-  .text : {
-    *(entry)
-    *(.text*)
-  }
-  etext = .;
-  _etext = .;
-  .rodata : {
-    *(.rodata*)
-  }
-  .data : {
-    *(.data)
-  }
-  edata = .;
-  _data = .;
-  .bss : {
-	_bss_start = .;
-    *(.bss*)
-    *(.sbss*)
-    *(.scommon)
-  }
-  _stack_top = ALIGN(0x1000);
-  . = _stack_top + 0x8000;
-  _stack_pointer = .;
-  end = .;
-  _end = .;
-  _heap_start = ALIGN(0x1000);
-}

am/src/mycpu/timer.c

@@ -1,13 +1,17 @@
 #include <am.h>
 
 void __am_timer_init() {
-
 }
 
 void __am_timer_uptime(AM_TIMER_UPTIME_T *uptime) {
-
+  uptime->us = 0;
 }
 
 void __am_timer_rtc(AM_TIMER_RTC_T *rtc) {
-
+  rtc->second = 0;
+  rtc->minute = 0;
+  rtc->hour   = 0;
+  rtc->day    = 0;
+  rtc->month  = 0;
+  rtc->year   = 1900;
 }

am/src/mycpu/trm.c

@@ -1,9 +1,13 @@
 #include <am.h>
-#include <mycpu.h>
+#include <klib-macros.h>
 
 extern char _heap_start;
 int main(const char *args);
 
+extern char _pmem_start;
+#define PMEM_SIZE (128 * 1024 * 1024)
+#define PMEM_END  ((uintptr_t)&_pmem_start + PMEM_SIZE)
+
 Area heap = RANGE(&_heap_start, PMEM_END);
 #ifndef MAINARGS
 #define MAINARGS ""
@@ -11,7 +15,6 @@ Area heap = RANGE(&_heap_start, PMEM_END);
 static const char mainargs[] = MAINARGS;
 
 void putch(char ch) {
-
 }
 
 void halt(int code) {

scripts/riscv64-mycpu.mk

@@ -4,17 +4,17 @@ CFLAGS        += $(COMMON_FLAGS) -static
 ASFLAGS       += $(COMMON_FLAGS) -O0
 LDFLAGS       += -melf64lriscv
 
-AM_SRCS := mycpu/boot/start.S \
+AM_SRCS := mycpu/start.S \
            mycpu/trm.c \
-		   mycpu/ioe/timer.c \
-		   mycpu/ioe/ioe.c \
-		   mycpu/ioe/input.c
+           mycpu/ioe.c \
+           mycpu/timer.c \
+           mycpu/input.c
 
 CFLAGS    += -fdata-sections -ffunction-sections
-LDFLAGS   += -T $(AM_HOME)/am/src/mycpu/scripts/section.ld
+LDFLAGS   += -T $(AM_HOME)/scripts/platform/nemu.ld --defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
 LDFLAGS   += --gc-sections -e _start
 CFLAGS += -DMAINARGS=\"$(mainargs)\"
-CFLAGS += -I$(AM_HOME)/am/src/mycpu/include
+.PHONY: $(AM_HOME)/am/src/mycpu/trm.c
 
 image: $(IMAGE).elf
 	@$(OBJDUMP) -d $(IMAGE).elf > $(IMAGE).txt