bios/boot: add specific flash_boot for linux with vexriscv

diff --git a/litex/soc/software/bios/boot.c b/litex/soc/software/bios/boot.c
index 877b719e59803c485fabccdaeab842aa2dd60c94..6ff682db0598f3b22542d02ccb5380efefed1645 100644 (file)
--- a/litex/soc/software/bios/boot.c
+++ b/litex/soc/software/bios/boot.c
@@ -304,6 +304,28 @@ void netboot(void)
 
 #endif
 
+#ifdef FLASHBOOT_LINUX_VEXRISCV
+
+/* TODO: add configurable flash mapping, improve integration */
+
+void flashboot(void)
+{
+       printf("Loading Image from flash...\n");
+       memcpy((void *)MAIN_RAM_BASE + 0x00000000, (void *)0x50400000, 0x400000);
+
+       printf("Loading rootfs.cpio from flash...\n");
+       memcpy((void *)MAIN_RAM_BASE + 0x02000000, (void *)0x50800000, 0x700000);
+
+       printf("Loading rv32.dtb from flash...\n");
+       memcpy((void *)MAIN_RAM_BASE + 0x03000000, (void *)0x50f00000, 0x001000);
+
+       printf("Loading emulator.bin from flash...\n");
+       memcpy((void *)EMULATOR_RAM_BASE + 0x00000000, (void *)0x50f80000, 0x004000);
+
+       boot(0, 0, 0, EMULATOR_RAM_BASE);
+}
+#else
+
 #ifdef FLASH_BOOT_ADDRESS
 
 /* On systems with exernal SDRAM we copy out of the SPI flash into the SDRAM
@@ -346,6 +368,8 @@ void flashboot(void)
 }
 #endif
 
+#endif
+
 #ifdef ROM_BOOT_ADDRESS
 /* When firmware is small enough, it can be interesting to run code from an
    embedded blockram memory (faster and not impacted by memory controller