storage 2

sw/n64/N64.ld

@@ -1,5 +1,5 @@
 MEMORY {
-    rdram (rwx) : org = 0x80300000, len = 1M
+    rdram (rwx) : org = 0x80000400, len = 4M - 0x400
     flash (r)   : org = 0xB0000000, len = 90k
 }
 

sw/n64/src/boot.c

@@ -21,10 +21,11 @@ static const ipl3_crc32_t ipl3_crc32[] = {
     { .crc32 = 0x0B050EE0, .seed = 0x78, .version = 0 },   // CICx103
     { .crc32 = 0x98BC2C86, .seed = 0x91, .version = 0 },   // CICx105
     { .crc32 = 0xACC8580A, .seed = 0x85, .version = 0 },   // CICx106
-    { .crc32 = 0x0C965795, .seed = 0xDD, .version = 0 },   // JP 64DD
+    { .crc32 = 0x10C68B18, .seed = 0xDD, .version = 0 },   // NDXJ0
-    { .crc32 = 0x10C68B18, .seed = 0xDD, .version = 0 },   // JP 64DD dev
+    { .crc32 = 0xBC605D0A, .seed = 0xDD, .version = 0 },   // NDDJ0
-    { .crc32 = 0x0E018159, .seed = 0xDD, .version = 0 },   // JP 64DD retail
+    { .crc32 = 0x502C4466, .seed = 0xDD, .version = 0 },   // NDDJ1
-    { .crc32 = 0x8FEBA21E, .seed = 0xDE, .version = 0 },   // US 64DD retail
+    { .crc32 = 0x0C965795, .seed = 0xDD, .version = 0 },   // NDDJ2
+    { .crc32 = 0x8FEBA21E, .seed = 0xDE, .version = 0 },   // NDDE0
 };
 
 

sw/n64/src/main.c

@@ -7,6 +7,8 @@ void main (void) {
     boot_info_t boot_info;
     sc64_info_t sc64_info;
 
+    boot_info.reset_type = OS_INFO->reset_type;
+
     sc64_get_info(&sc64_info);
 
     LOG_I("Bootloader version: %.32s\r\n", sc64_info.bootloader_version);
@@ -18,17 +20,17 @@ void main (void) {
             break;
 
         case BOOT_MODE_ROM:
-            boot_info.device_type = BOOT_DEVICE_TYPE_ROM;
             LOG_I("Running ROM from SDRAM\r\n");
+            boot_info.device_type = BOOT_DEVICE_TYPE_ROM;
             break;
 
         case BOOT_MODE_DDIPL:
-            boot_info.device_type = BOOT_DEVICE_TYPE_DD;
             LOG_I("Running DDIPL from SDRAM\r\n");
+            boot_info.device_type = BOOT_DEVICE_TYPE_DD;
             break;
 
         case BOOT_MODE_DIRECT:
-            LOG_I("Running bootloader from SDRAM, running menu from FSD\r\n");
+            LOG_I("Running bootloader from SDRAM - running menu from FSD\r\n");
             storage_run_menu(STORAGE_BACKEND_USB, &boot_info, &sc64_info);
             break;
 
@@ -37,8 +39,6 @@ void main (void) {
             while (1);
     }
 
-    boot_info.reset_type = OS_INFO->reset_type;
-
     if (sc64_info.tv_type != TV_TYPE_UNKNOWN) {
         boot_info.tv_type = sc64_info.tv_type;
         LOG_I("Using provided TV type: %d\r\n", boot_info.tv_type);
@@ -54,14 +54,14 @@ void main (void) {
     if (sc64_info.cic_seed != 0xFFFF) {
         boot_info.cic_seed = sc64_info.cic_seed & 0xFF;
         boot_info.version = (sc64_info.cic_seed >> 8) & 0x01;
-        LOG_I("Using provided CIC seed and version: 0x%02X / %d\r\n", boot_info.cic_seed, boot_info.version);
+        LOG_I("Using provided CIC seed and version: 0x%02X.%d\r\n", boot_info.cic_seed, boot_info.version);
     } else {
         if (boot_get_cic_seed_version(&boot_info)) {
-            LOG_I("Using CIC seed and version guessed from IPL3: 0x%02X / %d\r\n", boot_info.cic_seed, boot_info.version);
+            LOG_I("Using CIC seed and version guessed from IPL3: 0x%02X.%d\r\n", boot_info.cic_seed, boot_info.version);
         } else {
             boot_info.cic_seed = 0x3F;
             boot_info.version = 0;
-            LOG_I("Using 6102/7101 CIC seed and version: 0x%02X / %d\r\n", boot_info.cic_seed, boot_info.version);
+            LOG_I("Using 6102/7101 CIC seed and version: 0x%02X.%d\r\n", boot_info.cic_seed, boot_info.version);
         }
     }
 

sw/n64/src/storage.c

@@ -1,7 +1,64 @@
 #include "storage.h"
+#include "sc64.h"
+#include "fatfs/ff.h"
+
+
+static const char *fatfs_error_codes[] = {
+	"(0) Succeeded",
+	"(1) A hard error occurred in the low level disk I/O layer",
+	"(2) Assertion failed",
+	"(3) The physical drive cannot work",
+	"(4) Could not find the file",
+	"(5) Could not find the path",
+	"(6) The path name format is invalid",
+	"(7) Access denied due to prohibited access or directory full",
+	"(8) Access denied due to prohibited access",
+	"(9) The file/directory object is invalid",
+	"(10) The physical drive is write protected",
+	"(11) The logical drive number is invalid",
+	"(12) The volume has no work area",
+	"(13) There is no valid FAT volume",
+	"(14) The f_mkfs() aborted due to any problem",
+	"(15) Could not get a grant to access the volume within defined period",
+	"(16) The operation is rejected according to the file sharing policy",
+	"(17) LFN working buffer could not be allocated",
+	"(18) Number of open files > FF_FS_LOCK",
+	"(19) Given parameter is invalid",
+};
+
+
+#define FF_CHECK(x) { \
+    FRESULT fatfs_result = x; \
+    if (fatfs_result) { \
+        LOG_E("fatfs error \"%s\" at [%s:%d] in expr: %s\r\n", fatfs_error_codes[fatfs_result], __FILE__, __LINE__, #x); \
+        while (1); \
+    } \
+}
 
 
 void storage_run_menu (storage_backend_t storage_backend, boot_info_t *boot_info, sc64_info_t *sc64_info) {
+    FATFS fs;
+    FIL fil;
+
+    if (storage_backend == STORAGE_BACKEND_SD) {
+        FF_CHECK(f_mount(&fs, "0:", 1));
+        FF_CHECK(f_chdrive("0:"));
+    } else if (storage_backend == STORAGE_BACKEND_USB) {
+        FF_CHECK(f_mount(&fs, "1:", 1));
+        FF_CHECK(f_chdrive("1:"));
+    } else {
+        LOG_E("Unknown storage backend %d\r\n", storage_backend);
+        while (1);
+    }
+
+    FF_CHECK(f_open(&fil, "sc64menu.elf", FA_READ));
+
     // TODO: Implement ELF loader here
-    while (1);
+
+    FF_CHECK(f_close(&fil));
+
+    // TODO: Execute ELF here
+    // menu(&boot_info, &sc64_info);
+
+    boot_info->device_type = BOOT_DEVICE_TYPE_ROM;
 }

sw/riscv/SC64.ld

@@ -15,7 +15,7 @@ SECTIONS {
         . = ALIGN(4);
         _stext = .;
         *(.text .text.* .gnu.linkonce.t.*)
-        *(.rdata .rodata .rodata.* .gnu.linkonce.r.*)
+        *(.rodata .rodata.* .gnu.linkonce.r.*)
         . = ALIGN(4);
         _etext = .;
     } > ram AT > rom