From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 12 Jun 2020 08:18:44 +0000 (+0200)
Subject: bios/boot: rewrite ROM boot description.
X-Git-Tag: 24jan2021_ls180~173
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=05cb5f96a12143ebc45f243b6c86b206017b402c;p=litex.git

bios/boot: rewrite ROM boot description.
---

diff --git a/litex/soc/software/bios/boot.c b/litex/soc/software/bios/boot.c
index 1582c7b8..ce4b6e29 100644
--- a/litex/soc/software/bios/boot.c
+++ b/litex/soc/software/bios/boot.c
@@ -86,10 +86,11 @@ enum {
 /*-----------------------------------------------------------------------*/
 
 #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
-   activity). Define ROM_BOOT_ADDRESS for that and initialize the blockram
-   with the firmware data. */
+/* Running the application code from ROM is the fastest way to execute code
+   and could be interesting when the code is small enough, on large devices
+   where many blockrams are available or simply when the execution speed is
+   critical. Defining ROM_BOOT_ADDRESS in the SoC will make the BIOS jump to
+   it at boot. */
 void romboot(void)
 {
 	boot(0, 0, 0, ROM_BOOT_ADDRESS);