From 0c06127499d0f0d13dcc1958f84d446f56a77fec Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Mon, 22 Nov 2021 11:12:23 +0000
Subject: [PATCH] [Bootloader] - cleaned up - added srec_init()

git-svn-id: http://moon:8086/svn/mips@178 a8ebac50-d88d-4704-bea3-6648445a41b3
---
 src/bootloader/bootloader_with_flash.c | 21 +++++++++++----------
 src/bootloader/srec.c                  |  5 +++++
 src/bootloader/srec.h                  |  1 +
 3 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/src/bootloader/bootloader_with_flash.c b/src/bootloader/bootloader_with_flash.c
index 623e61a..0ede29e 100644
--- a/src/bootloader/bootloader_with_flash.c
+++ b/src/bootloader/bootloader_with_flash.c
@@ -118,7 +118,7 @@ int main(int argc, char *argv[])
 	uint8_t srec_buf[SREC_BUFSIZE];
 	srec_t srec;
 	int srec_state;
-	uint32_t haddr = 0, result;
+	uint32_t haddr = 0;
 	flash_t flash;
 	flash_img_hdr_t img_hdr = {0};
 	flash_img_hdr_t *pImg_hdr;
@@ -126,14 +126,13 @@ int main(int argc, char *argv[])
 
 	volatile uint32_t *pGPIO_DATA = (uint32_t*)SYS_GPIO_0_DATA;
 	volatile uint32_t *pGPIO_DIR = (uint32_t*)SYS_GPIO_0_DIR;
-	volatile uint32_t *pFlashIO = (uint32_t*)FLASH_BASE_IO;		// Flash in uncached area
 	uint32_t flash_offset;
 
 	*pGPIO_DIR  = GPIO_0_DFLT_DIR;
 	*pGPIO_DATA = GPIO_0_DFLT_DATA;
 	block_sel = 0x7F & (uint32_t)((*pGPIO_DATA >> GPIO_0_ALIGN_DIP) & GPIO_0_MASK_DIP);
 
-	sputs("\n\nMIPS bootloader 2.01\n");
+	sputs("\n\nMIPS bootloader 2.02\n");
 	PrintCPUinfo();
 	
 	// ----------------------------------------------------------
@@ -146,10 +145,9 @@ int main(int argc, char *argv[])
 	// Get flash offset by value of DIP-switch
 	flash_offset = flash_get_offset_by_blocknum(&flash, block_sel);
 
-	pFlashIO = (uint32_t*)(SYS_FLASH_IO + flash_offset);
-
 	if (!(((*pGPIO_DATA >> GPIO_0_ALIGN_BTN) & GPIO_0_MASK_BTN) & 2))
 	{
+		volatile uint32_t *pFlashIO = (uint32_t*)(SYS_FLASH_IO + flash_offset);		// Flash in uncached area
 		pImg_hdr = (flash_img_hdr_t*)pFlashIO;
 		if ((pImg_hdr->magic != MAGIC_EL) && (pImg_hdr->magic != MAGIC_EB))
 		{
@@ -175,15 +173,16 @@ int main(int argc, char *argv[])
 
 		while(1)
 		{
+			srec_init();
 			sputs(".");
 			while(1)
 			{
-				result = srec_getline(srec_buf);
-				srec_state = srec_decode(&srec, srec_buf, result);
+				uint32_t size = srec_getline(srec_buf);
+				srec_state = srec_decode(&srec, srec_buf, size);
+				uint32_t result = -1;
 				switch (srec_state)
 				{
 					case srec_data:
-						result = -1;
 						if ((srec.addr + srec.size) > (SDRAM_BASE + MAX_IMG_SIZE))
 						{
 							sputs("O");
@@ -196,7 +195,6 @@ int main(int argc, char *argv[])
 							haddr = srec.addr + srec.size;
 						}
 						result = 0;
-
 						break;
 
 					case srec_eob:
@@ -246,11 +244,14 @@ int main(int argc, char *argv[])
 						// Jump to reset vector
 						Jump_to((void*)0xBFC00000);
 
+						result = 0;
 						break;
 
+					case srec_sob:
+						break;
+						
 					default:
 						sputs("E");
-						result = -1;
 						break;
 				}
 				if (IS_ERROR(result))
diff --git a/src/bootloader/srec.c b/src/bootloader/srec.c
index 9ddd58e..28862c1 100644
--- a/src/bootloader/srec.c
+++ b/src/bootloader/srec.c
@@ -23,6 +23,11 @@ uint8_t h2i(uint8_t *c)
 	return b;
 }
 
+void srec_init()
+{
+	
+}
+
 int srec_decode(srec_t *pRec, uint8_t *pBuf, int buflen)
 {
 	uint8_t chksum, byte;
diff --git a/src/bootloader/srec.h b/src/bootloader/srec.h
index b8032ea..5f08f99 100644
--- a/src/bootloader/srec.h
+++ b/src/bootloader/srec.h
@@ -34,6 +34,7 @@ enum srec_type
 extern "C" {
 #endif
 
+void srec_init();
 int srec_decode(srec_t *pRec, uint8_t *pBuf, int buflen);
 int srec_getline(uint8_t *pLine);