From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Sat, 4 May 2019 09:27:01 +0000 (+0200)
Subject: bios/boot: add specific flash_boot for linux with vexriscv
X-Git-Tag: 24jan2021_ls180~1240
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fcd518b5d03233450965a968e55c52b82125942d;p=litex.git

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 877b719e..6ff682db 100644
--- 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