all: hello_world.hex
+console.o: ../lib/console.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
hello_world.elf: hello_world.o head.o console.o
$(LD) $(LDFLAGS) -o $@ $^
+++ /dev/null
-#include <stdint.h>
-#include <stdbool.h>
-
-#include "console.h"
-#include "microwatt_soc.h"
-#include "io.h"
-
-#define UART_FREQ 115200
-
-/*
- * Core UART functions to implement for a port
- */
-
-static uint64_t potato_uart_base;
-
-static uint64_t potato_uart_reg_read(int offset)
-{
- return readq(potato_uart_base + offset);
-}
-
-static void potato_uart_reg_write(int offset, uint64_t val)
-{
- writeq(val, potato_uart_base + offset);
-}
-
-static int potato_uart_rx_empty(void)
-{
- uint64_t val;
-
- val = potato_uart_reg_read(POTATO_CONSOLE_STATUS);
-
- if (val & POTATO_CONSOLE_STATUS_RX_EMPTY)
- return 1;
-
- return 0;
-}
-
-static int potato_uart_tx_full(void)
-{
- uint64_t val;
-
- val = potato_uart_reg_read(POTATO_CONSOLE_STATUS);
-
- if (val & POTATO_CONSOLE_STATUS_TX_FULL)
- return 1;
-
- return 0;
-}
-
-static char potato_uart_read(void)
-{
- uint64_t val;
-
- val = potato_uart_reg_read(POTATO_CONSOLE_RX);
-
- return (char)(val & 0x000000ff);
-}
-
-static void potato_uart_write(char c)
-{
- uint64_t val;
-
- val = c;
-
- potato_uart_reg_write(POTATO_CONSOLE_TX, val);
-}
-
-static unsigned long potato_uart_divisor(unsigned long proc_freq, unsigned long uart_freq)
-{
- return proc_freq / (uart_freq * 16) - 1;
-}
-
-void potato_uart_init(void)
-{
- uint64_t proc_freq;
-
- potato_uart_base = UART_BASE;
- proc_freq = readq(SYSCON_BASE + SYS_REG_CLKINFO);
-
- potato_uart_reg_write(POTATO_CONSOLE_CLOCK_DIV, potato_uart_divisor(proc_freq, UART_FREQ));
-}
-
-void potato_uart_irq_en(void)
-{
- potato_uart_reg_write(POTATO_CONSOLE_IRQ_EN, 0xff);
-}
-
-void potato_uart_irq_dis(void)
-{
- potato_uart_reg_write(POTATO_CONSOLE_IRQ_EN, 0x00);
-}
-
-int getchar(void)
-{
- while (potato_uart_rx_empty())
- /* Do nothing */ ;
-
- return potato_uart_read();
-}
-
-int putchar(int c)
-{
- while (potato_uart_tx_full())
- /* Do Nothing */;
-
- potato_uart_write(c);
- return c;
-}
-
-void putstr(const char *str, unsigned long len)
-{
- for (unsigned long i = 0; i < len; i++) {
- putchar(str[i]);
- }
-}
-
-int puts(const char *str)
-{
- unsigned int i;
-
- for (i = 0; *str; i++) {
- char c = *(str++);
- if (c == 10)
- putchar(13);
- putchar(c);
- }
- return 0;
-}
-
-size_t strlen(const char *s)
-{
- size_t len = 0;
-
- while (*s++)
- len++;
-
- return len;
-}
+++ /dev/null
-#include <stddef.h>
-
-void potato_uart_init(void);
-void potato_uart_irq_en(void);
-void potato_uart_irq_dis(void);
-int getchar(void);
-void putchar(unsigned char c);
-void putstr(const char *str, unsigned long len);
-size_t strlen(const char *s);
--- /dev/null
+#include <stddef.h>
+
+void potato_uart_init(void);
+void potato_uart_irq_en(void);
+void potato_uart_irq_dis(void);
+int getchar(void);
+int putchar(int c);
+void putstr(const char *str, unsigned long len);
+int puts(const char *str);
+size_t strlen(const char *s);
--- /dev/null
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "console.h"
+#include "microwatt_soc.h"
+#include "io.h"
+
+#define UART_FREQ 115200
+
+/*
+ * Core UART functions to implement for a port
+ */
+
+static uint64_t potato_uart_base;
+
+static uint64_t potato_uart_reg_read(int offset)
+{
+ return readq(potato_uart_base + offset);
+}
+
+static void potato_uart_reg_write(int offset, uint64_t val)
+{
+ writeq(val, potato_uart_base + offset);
+}
+
+static int potato_uart_rx_empty(void)
+{
+ uint64_t val;
+
+ val = potato_uart_reg_read(POTATO_CONSOLE_STATUS);
+
+ if (val & POTATO_CONSOLE_STATUS_RX_EMPTY)
+ return 1;
+
+ return 0;
+}
+
+static int potato_uart_tx_full(void)
+{
+ uint64_t val;
+
+ val = potato_uart_reg_read(POTATO_CONSOLE_STATUS);
+
+ if (val & POTATO_CONSOLE_STATUS_TX_FULL)
+ return 1;
+
+ return 0;
+}
+
+static char potato_uart_read(void)
+{
+ uint64_t val;
+
+ val = potato_uart_reg_read(POTATO_CONSOLE_RX);
+
+ return (char)(val & 0x000000ff);
+}
+
+static void potato_uart_write(char c)
+{
+ uint64_t val;
+
+ val = c;
+
+ potato_uart_reg_write(POTATO_CONSOLE_TX, val);
+}
+
+static unsigned long potato_uart_divisor(unsigned long proc_freq, unsigned long uart_freq)
+{
+ return proc_freq / (uart_freq * 16) - 1;
+}
+
+void potato_uart_init(void)
+{
+ uint64_t proc_freq;
+
+ potato_uart_base = UART_BASE;
+ proc_freq = readq(SYSCON_BASE + SYS_REG_CLKINFO);
+
+ potato_uart_reg_write(POTATO_CONSOLE_CLOCK_DIV, potato_uart_divisor(proc_freq, UART_FREQ));
+}
+
+void potato_uart_irq_en(void)
+{
+ potato_uart_reg_write(POTATO_CONSOLE_IRQ_EN, 0xff);
+}
+
+void potato_uart_irq_dis(void)
+{
+ potato_uart_reg_write(POTATO_CONSOLE_IRQ_EN, 0x00);
+}
+
+int getchar(void)
+{
+ while (potato_uart_rx_empty())
+ /* Do nothing */ ;
+
+ return potato_uart_read();
+}
+
+int putchar(int c)
+{
+ while (potato_uart_tx_full())
+ /* Do Nothing */;
+
+ potato_uart_write(c);
+ return c;
+}
+
+void putstr(const char *str, unsigned long len)
+{
+ for (unsigned long i = 0; i < len; i++) {
+ putchar(str[i]);
+ }
+}
+
+int puts(const char *str)
+{
+ unsigned int i;
+
+ for (i = 0; *str; i++) {
+ char c = *(str++);
+ if (c == 10)
+ putchar(13);
+ putchar(c);
+ }
+ return 0;
+}
+
+size_t strlen(const char *s)
+{
+ size_t len = 0;
+
+ while (*s++)
+ len++;
+
+ return len;
+}
OBJ = $(BUILD_DIR)/obj
PROGRAM = sdram_init
-OBJECTS = $(OBJ)/head.o $(OBJ)/main.o $(OBJ)/sdram.o
+OBJECTS = $(OBJ)/head.o $(OBJ)/main.o $(OBJ)/sdram.o $(OBJ)/console.o
#### Compiler
$(OBJ)/sdram.o: $(LXSRC_DIR)/sdram.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
-$(OBJ)/%.o : $(SRC_DIR)/%.S
- $(call Q,AS, $(CC) $(ASFLAGS) -c $< -o $@, $@)
+$(OBJ)/console.o: $(SRC_DIR)/../../../lib/console.c
+ $(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
$(OBJ)/%.o : $(SRC_DIR)/%.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
+$(OBJ)/%.o : $(SRC_DIR)/%.S
+ $(call Q,AS, $(CC) $(ASFLAGS) -c $< -o $@, $@)
$(OBJ)/%.o : $(SRC_DIR)/libc/src/%.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
-../hello_world/console.c
\ No newline at end of file
+../lib/console.c
\ No newline at end of file
-../hello_world/console.h
\ No newline at end of file
+../include/console.h
\ No newline at end of file
LD = $(CROSS_COMPILE)ld
OBJCOPY = $(CROSS_COMPILE)objcopy
-CFLAGS = -Os -g -Wall -std=c99 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections -I ../../hello_world -I ../../include
+CFLAGS = -Os -g -Wall -std=c99 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections -I ../../include
ASFLAGS = $(CFLAGS)
LDFLAGS = -T powerpc.lds
all: $(TEST).hex
-$(TEST).elf: $(TEST).o head.o ../../hello_world/console.o
- $(LD) $(LDFLAGS) -o $(TEST).elf $(TEST).o head.o ../../hello_world/console.o
+console.o: ../../lib/console.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
+$(TEST).elf: $(TEST).o head.o console.o
+ $(LD) $(LDFLAGS) -o $(TEST).elf $(TEST).o head.o console.o
$(TEST).bin: $(TEST).elf
$(OBJCOPY) -O binary $(TEST).elf $(TEST).bin