From dcf84169ae75b11c1656d45dbc6c626d93da6a10 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Fri, 8 Dec 2017 15:07:52 +0100
Subject: Add output support (broken on esp8266)

---
 src/arch/esp8266/Makefile.inc     |  5 ++++-
 src/arch/esp8266/arch.cc          |  5 +++++
 src/arch/esp8266/driver/stdout.cc | 25 +++++++++++++++++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 src/arch/esp8266/driver/stdout.cc

(limited to 'src/arch/esp8266')

diff --git a/src/arch/esp8266/Makefile.inc b/src/arch/esp8266/Makefile.inc
index b0fc4ce..9a08678 100644
--- a/src/arch/esp8266/Makefile.inc
+++ b/src/arch/esp8266/Makefile.inc
@@ -9,6 +9,7 @@ CC = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-gcc
 CXX = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-g++
 AR = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-ar
 LD = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-gcc
+OBJCOPY = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-objcopy
 
 INCLUDES += -Iinclude/esp8266 -I${SDK_BASE}/include
 COMMON_FLAGS += -nostdlib -mlongcalls -D__ets__ -DICACHE_FLASH
@@ -16,17 +17,19 @@ CXXFLAGS = -std=c++11
 LDFLAGS += -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static
 
 TARGETS += src/arch/esp8266/arch.cc src/arch/esp8266/driver/gpio.cc
+TARGETS += src/arch/esp8266/driver/stdout.cc
 
 OBJECTS = ${TARGETS:.cc=.o}
 
 .cc.o:
 	${CXX} ${INCLUDES} ${COMMON_FLAGS} ${CXXFLAGS} -c -o $@ ${@:.o=.cc}
+	${OBJCOPY} --rename-section .text=.irom0.text --rename-section .literal=.irom0.literal $@
 
 build/system.ar: ${OBJECTS}
 	${AR} cru $@ ${OBJECTS}
 
 build/system.elf: build/system.ar
-	${CC} -L${SDK_BASE}/lib -T${SDK_BASE}/lib/eagle.app.v6.ld ${LDFLAGS} \
+	${CC} -L${SDK_BASE}/lib -T${SDK_BASE}/lib/eagle.app.v6-derf.ld ${LDFLAGS} \
 		-Wl,--start-group -lc -lgcc -lhal -lpp -lphy -lnet80211 -llwip -lwpa \
 		-lmain $< -Wl,--end-group -o $@
 
diff --git a/src/arch/esp8266/arch.cc b/src/arch/esp8266/arch.cc
index 0e11f2d..f5d1c91 100644
--- a/src/arch/esp8266/arch.cc
+++ b/src/arch/esp8266/arch.cc
@@ -10,6 +10,8 @@ extern "C" {
 void ets_timer_arm_new(os_timer_t *ptimer, uint32_t milliseconds, bool repeat_flag, bool us_flag);
 void ets_timer_disarm(os_timer_t *ptimer);
 void ets_timer_setfn(os_timer_t *ptimer, os_timer_func_t *pfunction, void *parg);
+extern void (*__init_array_start)();
+extern void (*__init_array_end)();
 }
 
 #define user_procTaskPrio        0
@@ -30,6 +32,9 @@ extern int main(void);
 
 void ICACHE_FLASH_ATTR jump_to_main(void)
 {
+	for (void (**p)() = &__init_array_start; p != &__init_array_start; p++) {
+		(*p)();
+	}
 #ifdef WITH_LOOP
 	os_timer_disarm(&loop_timer);
 	os_timer_setfn(&loop_timer, (os_timer_func_t *)jump_to_loop, (void *)0);
diff --git a/src/arch/esp8266/driver/stdout.cc b/src/arch/esp8266/driver/stdout.cc
new file mode 100644
index 0000000..b35275b
--- /dev/null
+++ b/src/arch/esp8266/driver/stdout.cc
@@ -0,0 +1,25 @@
+#include "driver/stdout.h"
+extern "C" {
+#include "osapi.h"
+#include "user_interface.h"
+#include "gpio.h"
+void uart_div_modify(uint8_t uart_no, uint32 DivLatchValue);
+void os_printf_plus(const char *s, ...);
+}
+
+void StandardOutput::setup()
+{
+	uart_div_modify(0, UART_CLK_FREQ / 115200);
+}
+
+void StandardOutput::put(char c)
+{
+	os_printf("%c", c);
+}
+
+void StandardOutput::write(const char *s)
+{
+	os_printf("%s", s);
+}
+
+StandardOutput kout;
-- 
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