From 06b5a32ca82128edd807542d633d34897e0f43ef Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Wed, 26 Feb 2020 03:48:50 +0100
Subject: eve portable

---
 code/fe310/eos/eve/Makefile       | 17 ++++++++++
 code/fe310/eos/eve/eve_platform.c | 69 +++++++++++++++++++++++++++++++++++++++
 code/fe310/eos/eve/eve_platform.h | 23 +++++++++++++
 3 files changed, 109 insertions(+)
 create mode 100644 code/fe310/eos/eve/Makefile
 create mode 100644 code/fe310/eos/eve/eve_platform.c
 create mode 100644 code/fe310/eos/eve/eve_platform.h

(limited to 'code/fe310/eos/eve')

diff --git a/code/fe310/eos/eve/Makefile b/code/fe310/eos/eve/Makefile
new file mode 100644
index 0000000..5fd619a
--- /dev/null
+++ b/code/fe310/eos/eve/Makefile
@@ -0,0 +1,17 @@
+include ../../common.mk
+
+CFLAGS += -I.. -I../../include -I../../drivers
+
+obj = eve.o eve_kbd.o eve_text.o eve_platform.o
+
+
+%.o: %.c %.h
+	$(CC) $(CFLAGS) -c $<
+
+%.o: %.S
+	$(CC) $(CFLAGS) -c $<
+
+all: $(obj)
+
+clean:
+	rm -f *.o
\ No newline at end of file
diff --git a/code/fe310/eos/eve/eve_platform.c b/code/fe310/eos/eve/eve_platform.c
new file mode 100644
index 0000000..e15d414
--- /dev/null
+++ b/code/fe310/eos/eve/eve_platform.c
@@ -0,0 +1,69 @@
+#include <stdlib.h>
+
+#include "encoding.h"
+#include "platform.h"
+
+#include "eos.h"
+#include "interrupt.h"
+#include "event.h"
+#include "timer.h"
+#include "spi.h"
+#include "eve.h"
+#include "eve_platform.h"
+
+#include "irq_def.h"
+
+#define EVE_PIN_INTR            0
+
+static void handle_time(unsigned char type) {
+    eos_spi_dev_start(EOS_DEV_DISP);
+    eve_handle_time();
+    eos_spi_dev_stop();
+}
+
+static void handle_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
+    uint8_t flags;
+
+    eos_spi_dev_start(EOS_DEV_DISP);
+    eve_handle_touch();
+    eos_spi_dev_stop();
+
+    GPIO_REG(GPIO_LOW_IP) = (1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_LOW_IE) |= (1 << EVE_PIN_INTR);
+}
+
+static void handle_intr(void) {
+    GPIO_REG(GPIO_LOW_IE) &= ~(1 << EVE_PIN_INTR);
+    eos_evtq_push_isr(EOS_EVT_UI | EVE_ETYPE_INTR, NULL, 0);
+    return;
+}
+
+void eve_sleep(uint32_t ms) {
+    eos_timer_sleep(ms);
+}
+
+void eve_timer_set(uint32_t ms) {
+    eos_timer_set(ms, EOS_TIMER_ETYPE_UI, 0);
+}
+
+void eve_timer_clear(void) {
+    eos_timer_clear(EOS_TIMER_ETYPE_UI);
+}
+
+uint64_t eve_timer_get_tick(void) {
+    volatile uint64_t *mtime = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIME);
+    return *mtime;
+}
+
+void eve_init_platform(void) {
+    eos_evtq_set_handler(EOS_EVT_UI, handle_evt);
+    eos_timer_set_handler(EOS_TIMER_ETYPE_UI, handle_time);
+
+    GPIO_REG(GPIO_INPUT_EN)     |=  (1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_OUTPUT_EN)    &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_PULLUP_EN)    &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_OUTPUT_XOR)   &= ~(1 << EVE_PIN_INTR);
+
+    GPIO_REG(GPIO_LOW_IE)       |=  (1 << EVE_PIN_INTR);
+    eos_intr_set(INT_GPIO_BASE + EVE_PIN_INTR, IRQ_PRIORITY_UI, handle_intr);
+}
\ No newline at end of file
diff --git a/code/fe310/eos/eve/eve_platform.h b/code/fe310/eos/eve/eve_platform.h
new file mode 100644
index 0000000..8ab43ea
--- /dev/null
+++ b/code/fe310/eos/eve/eve_platform.h
@@ -0,0 +1,23 @@
+#include <stdint.h>
+
+#include "spi.h"
+
+#define EVE_RTC_FREQ        32768
+
+#define EVE_SPI_FLAG_BSWAP  EOS_SPI_FLAG_BSWAP
+#define EVE_SPI_FLAG_TX     EOS_SPI_FLAG_TX
+
+#define eve_spi_cs_set      eos_spi_cs_set
+#define eve_spi_cs_clear    eos_spi_cs_clear
+#define eve_spi_flush       eos_spi_flush
+#define eve_spi_xchg8       eos_spi_xchg8
+#define eve_spi_xchg16      eos_spi_xchg16
+#define eve_spi_xchg24      eos_spi_xchg24
+#define eve_spi_xchg32      eos_spi_xchg32
+
+void eve_sleep(uint32_t ms);
+void eve_timer_set(uint32_t ms);
+void eve_timer_clear(void);
+uint64_t eve_timer_get_tick(void);
+
+void eve_init_platform(void);
\ No newline at end of file
-- 
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