From 738626e67eae7177bae1923c785e79b9403404f7 Mon Sep 17 00:00:00 2001
From: Marek Kraus <gamelaster@outlook.com>
Date: Thu, 10 Nov 2022 21:36:00 +0100
Subject: [PATCH] Initial support for BL808 Not working yet

---
 CMakeLists.txt              |  3 ++-
 include/blisp_chip.h        |  4 +++-
 lib/blisp.c                 | 12 +++++++++---
 lib/chip/blisp_chip_bl808.c |  8 ++++++++
 tools/blisp/src/cmd/write.c | 15 ++++++++++++++-
 5 files changed, 36 insertions(+), 6 deletions(-)
 create mode 100644 lib/chip/blisp_chip_bl808.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 124c4a1..a4b2ea1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,8 @@ option(BLISP_BUILD_CLI "Build CLI Tool" OFF)
 add_library(libblisp_obj OBJECT
         lib/blisp.c
         lib/chip/blisp_chip_bl60x.c
-        lib/chip/blisp_chip_bl70x.c)
+        lib/chip/blisp_chip_bl70x.c
+        lib/chip/blisp_chip_bl808.c)
 
 target_include_directories(libblisp_obj PRIVATE ${CMAKE_SOURCE_DIR}/include/)
 
diff --git a/include/blisp_chip.h b/include/blisp_chip.h
index c3d44f1..56801da 100644
--- a/include/blisp_chip.h
+++ b/include/blisp_chip.h
@@ -6,7 +6,8 @@
 
 enum blisp_chip_type {
     BLISP_CHIP_BL60X,
-    BLISP_CHIP_BL70X
+    BLISP_CHIP_BL70X,
+    BLISP_CHIP_BL808
 };
 
 struct blisp_chip { // TODO: Move elsewhere?
@@ -19,5 +20,6 @@ struct blisp_chip { // TODO: Move elsewhere?
 
 extern struct blisp_chip blisp_chip_bl60x;
 extern struct blisp_chip blisp_chip_bl70x;
+extern struct blisp_chip blisp_chip_bl808;
 
 #endif
\ No newline at end of file
diff --git a/lib/blisp.c b/lib/blisp.c
index a4a5e38..90f3db3 100644
--- a/lib/blisp.c
+++ b/lib/blisp.c
@@ -158,7 +158,7 @@ blisp_device_handshake(struct blisp_device* device, bool in_ef_loader) {
         if (!in_ef_loader) {
             if (device->is_usb) {
                 sp_blocking_write(serial_port, "BOUFFALOLAB5555RESET\0\0", 22,
-                                  100);
+                                  100); // TODO: Error handling
             }
         }
         ret = sp_blocking_write(serial_port, handshake_buffer, bytes_count,
@@ -166,6 +166,12 @@ blisp_device_handshake(struct blisp_device* device, bool in_ef_loader) {
         if (ret < 0) {
             return -1;
         }
+
+        if (device->chip->type == BLISP_CHIP_BL808) {
+            sleep_ms(300);
+            const uint8_t second_handshake[] = { 0x50, 0x00, 0x08, 0x00, 0x38, 0xF0, 0x00, 0x20, 0x00, 0x00, 0x00, 0x18 };
+            sp_blocking_write(serial_port, second_handshake, sizeof(second_handshake), 300); // TODO: Error handling
+        }
         ret = sp_blocking_read(serial_port, device->rx_buffer, 20, 50);
         if (ret >= 2) {
             for (uint8_t j = 0; j < (ret - 1); j++) {
@@ -189,10 +195,10 @@ int32_t blisp_device_get_boot_info(struct blisp_device* device, struct blisp_boo
     if (ret < 0) return ret;
 
     memcpy(boot_info->boot_rom_version, &device->rx_buffer[0], 4); // TODO: Endianess
-    if (device->chip->type == BLISP_CHIP_BL70X) {
+    if (device->chip->type == BLISP_CHIP_BL70X || device->chip->type == BLISP_CHIP_BL808) { // TODO: This is only 70X related
         memcpy(boot_info->chip_id, &device->rx_buffer[16], 8);
     }
-    // TODO: BL60X
+    // TODO: BL60X, BL808
     return 0;
 }
 
diff --git a/lib/chip/blisp_chip_bl808.c b/lib/chip/blisp_chip_bl808.c
new file mode 100644
index 0000000..46e20a1
--- /dev/null
+++ b/lib/chip/blisp_chip_bl808.c
@@ -0,0 +1,8 @@
+#include "blisp.h"
+
+struct blisp_chip blisp_chip_bl808 = {
+    .type = BLISP_CHIP_BL808,
+    .type_str = "bl808",
+    .usb_isp_available = true,
+    .handshake_byte_multiplier = 0.006f,
+};
diff --git a/tools/blisp/src/cmd/write.c b/tools/blisp/src/cmd/write.c
index 98ee249..7a139fc 100644
--- a/tools/blisp/src/cmd/write.c
+++ b/tools/blisp/src/cmd/write.c
@@ -196,6 +196,8 @@ void blisp_flash_firmware() {
         chip = &blisp_chip_bl70x;
     } else if (strcmp(chip_type->sval[0], "bl60x") == 0) {
         chip = &blisp_chip_bl60x;
+    } else if (strcmp(chip_type->sval[0], "bl808") == 0) {
+        chip = &blisp_chip_bl808;
     } else {
         fprintf(stderr, "Chip type is invalid.\n");
         return;
@@ -249,6 +251,11 @@ void blisp_flash_firmware() {
            boot_info.chip_id[6],
            boot_info.chip_id[7]);
 
+    if (device.chip->type == BLISP_CHIP_BL808) {
+        // Since eflash_loader is not needed in BL808, we can jump to flashing.
+        goto eflash_loader; // TODO: Rework
+    }
+
     char exe_path[PATH_MAX];
     char eflash_loader_path[PATH_MAX];
     get_binary_folder(exe_path, PATH_MAX); // TODO: Error handling
@@ -325,7 +332,13 @@ void blisp_flash_firmware() {
     }
     printf(" OK\n");
 
-eflash_loader:;
+eflash_loader:
+    if (device.chip->type == BLISP_CHIP_BL808) {
+        // Setting CLK configuration
+        // Setting Flash Config
+        // Setting Flash Parameter
+    }
+
     FILE* firmware_file = fopen(binary_to_write->filename[0], "rb");
     if (firmware_file == NULL) {
         fprintf(stderr,"Failed to open firmware file \"%s\".\n", binary_to_write->filename[0]);