fixes for ehrenberg platform, minres peripheral functions and nanolib

env/ehrenberg/init.c

@@ -5,16 +5,9 @@
 #include "platform.h"
 #include "encoding.h"
 
-#if __riscv_xlen == 32
-#define MCAUSE_INT         0x80000000UL
-#define MCAUSE_CAUSE       0x000003FFUL
-#else
-#define MCAUSE_INT         0x8000000000000000UL
-#define MCAUSE_CAUSE       0x00000000000003FFUL
-#endif
 
 extern int main(int argc, char** argv);
-extern void trap_entry();
+extern void trap_entry(void);
 #define IRQ_M_SOFT   3
 #define IRQ_M_TIMER  7
 #define IRQ_M_EXT    11
@@ -48,7 +41,7 @@ static uint32_t mtime_hi(void)
     return ret;
 }
 
-uint64_t get_timer_value()
+uint64_t get_timer_value(void)
 {
   while (1) {
     uint32_t hi = mtime_hi();
@@ -118,7 +111,7 @@ void _init()
 #ifndef NO_INIT
   init_pll();
   uart_init(115200);
-  printf("core freq at %d Hz\n", get_cpu_freq());
+  printf("core freq at %lu Hz\n", get_cpu_freq());
   write_csr(mtvec, &trap_entry);
   if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present
     write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping
@@ -133,6 +126,6 @@ void _init()
   
 }
 
-void _fini()
+void _fini(void)
 {
 }

env/ehrenberg/platform.h

@@ -3,9 +3,13 @@
 #ifndef _ISS_PLATFORM_H
 #define _ISS_PLATFORM_H
 
-// Some things missing from the official encoding.h
+#if __riscv_xlen == 32
-#define MCAUSE_INT         0x80000000
+#define MCAUSE_INT         0x80000000UL
-#define MCAUSE_CAUSE       0x7FFFFFFF
+#define MCAUSE_CAUSE       0x000003FFUL
+#else
+#define MCAUSE_INT         0x8000000000000000UL
+#define MCAUSE_CAUSE       0x00000000000003FFUL
+#endif
 
 #define APB_BUS
 

include/ehrenberg/devices/qspi.h

@@ -27,11 +27,11 @@ typedef struct {
 #define SPI_STATUS_RSP_INT_FLAG = (1 << 9)
 
 static inline void spi_configure(volatile qspi_t* reg, spi_cfg *config){
-    reg->config     = (config->cpol << 0) | (config->cpha << 1) | (config->mode << 4);
+    reg->CONFIG        = (config->cpol << 0) | (config->cpha << 1) | (config->mode << 4);
-    reg->clk_divider = config->clkDivider;
+    reg->SCLK_CONFIG   = config->clkDivider;
-    reg->ss_setup   = config->ssSetup;
+    reg->SSGEN_SETUP   = config->ssSetup;
-    reg->ss_hold    = config->ssHold;
+    reg->SSGEN_HOLD    = config->ssHold;
-    reg->ss_disable =config->ssDisable;
+    reg->SSGEN_DISABLE = config->ssDisable;
 }
 
 static inline void spi_init(volatile qspi_t* spi){
@@ -47,41 +47,41 @@ static inline void spi_init(volatile qspi_t* spi){
 }
 
 static inline uint32_t spi_cmd_avail(volatile qspi_t* reg){
-    return reg->status & 0xFFFF;
+    return reg->STATUS & 0xFFFF;
 }
 static inline uint32_t spi_rsp_occupied(volatile qspi_t* reg){
-    return reg->status >> 16;
+    return reg->STATUS >> 16;
 }
 
 static inline void spi_write(volatile qspi_t* reg, uint8_t data){
     while(spi_cmd_avail(reg) == 0);
-    reg->data = data | SPI_CMD_WRITE;
+    reg->DATA = data | SPI_CMD_WRITE;
 }
 
 static inline uint8_t spi_write_read(volatile qspi_t* reg, uint8_t data){
     while(spi_cmd_avail(reg) == 0);
-    reg->data = data | SPI_CMD_READ | SPI_CMD_WRITE;
+    reg->DATA = data | SPI_CMD_READ | SPI_CMD_WRITE;
     while(spi_rsp_occupied(reg) == 0);
-    return reg->data;
+    return reg->DATA;
 }
 
 
 static inline uint8_t spi_read(volatile qspi_t* reg){
     while(spi_cmd_avail(reg) == 0);
-    reg->data = SPI_CMD_READ;
+    reg->DATA = SPI_CMD_READ;
     while(spi_rsp_occupied(reg) == 0);
-    while((reg->data & 0x80000000)==0);
+    while((reg->DATA & 0x80000000)==0);
-    return reg->data;
+    return reg->DATA;
 }
 
 static inline void spi_select(volatile qspi_t* reg, uint32_t slaveId){
     while(spi_cmd_avail(reg) == 0);
-    reg->data = slaveId | 0x80 | SPI_CMD_SS;
+    reg->DATA = slaveId | 0x80 | SPI_CMD_SS;
 }
 
 static inline void spi_deselect(volatile qspi_t* reg, uint32_t slaveId){
     while(spi_cmd_avail(reg) == 0);
-    reg->data = slaveId | SPI_CMD_SS;
+    reg->DATA = slaveId | SPI_CMD_SS;
 }
 
 static inline void spi_wait_tx_idle(volatile qspi_t* reg){

include/ehrenberg/devices/uart.h

@@ -6,12 +6,20 @@
 
 #define uart_t apb3uart_t
 
-static void uart_write(volatile uart_t *reg, uint8_t data){
+static inline uint32_t uart_get_tx_free(volatile uart_t *reg){
+    return (reg->STATUS_REG >> 16) & 0xFF;
+}
+
+static inline uint32_t uart_get_rx_avail(volatile uart_t *reg){
+    return reg->STATUS_REG >> 24;
+}
+
+static inline void uart_write(volatile uart_t *reg, uint8_t data){
     while(get_uart_rx_tx_reg_tx_free(reg) == 0);
     set_uart_rx_tx_reg_data(reg, data);
 }
 
-static inline uint8_t uart_read(volatile uart_t *reg){
+static inline inline uint8_t uart_read(volatile uart_t *reg){
     uint32_t res = get_uart_rx_tx_reg_data(reg);
     while((res&0x10000) == 0) res = get_uart_rx_tx_reg_data(reg);
     return res;