barebox: boot from DDR during flashing procedure

The flasher script will write on the DDR memory the value content in magicstr. When barebox start, it checks for this string in the memory. If the string is there, barebox automatically boot the kernel from the DDR memory. Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

barebox: boot from DDR during flashing procedure
The flasher script will write on the DDR memory the value content in magicstr. When barebox start, it checks for this string in the memory. If the string is there, barebox automatically boot the kernel from the DDR memory. Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
3646303e · Federico Vaga · 0b69e1cd · 3646303e · 3646303e
Commit 3646303e authored Oct 18, 2012 by Federico Vaga
Hide whitespace changes
Inline Side-by-side

Showing with 14 additions and 0 deletions

init patches/barebox/env/bin/init +13 -0

magicstr patches/barebox/env/magicstr +1 -0

No files found.
--- a/patches/barebox/env/bin/init
+++ b/patches/barebox/env/bin/init
 #!/bin/sh

+# If we are in the flashing procedure, start with the kernel and file system
+# loaded into the DDR memory
+memcmp -s /dev/mem -d /env/magicstr 0x71FFFFF8 0x0 8
+if [ $? -eq 0 ]; then
+	echo "Booting kernel for NAND flashing procedure"
+	bootargs="console=ttyS0,115200 panic=10 mem=64M"
+	bootargs="$bootargs initrd=0x72000000,20M"
+	bootargs="$bootargs root=/dev/ram0"
+	addpart /dev/ram0 0x1000000@0x1000000(kernel)
+	addpart /dev/ram0 0x1000000@0x2000000(initrd)
+	bootm /dev/ram0.kernel
+fi
+
 autoboot_timeout="10";

 ### Override default value using /env/config

--- a/patches/barebox/env/magicstr
+++ b/patches/barebox/env/magicstr
+paperino
\ No newline at end of file