Hi,
I am currently trying to mount a SD card partition as L4Linux rootfs.
I am using a beagleboard. The first flash card partition (fat32) is mounted by U-boot and contains the L4Linux kernel . The second partition (ext3) contains the rootfs.
I have compiled L4Linux to support SD card et Ext3 filesystem and configured L4 to give to L4Linux access to the MMC device through a virtual bus.
But the SD card partitions are not available in L4Linux. Do I forget something ?
Regards,
Pierre Larus
-------------------------------------------------------------------
entry l4LinuxUcos
kernel fiasco -serial_esc
roottask moe rom/l4lx.cfg
module l4re
module ned
module io
module l4lx.cfg
module vmlinuz.arm
module beagle.devs
module beagle.io
-------------------------------------------------------------------
hw-root
{
# MultiMediaCard 1 2 3
mmc => new Device()
{
.hid = "OMAP_HSMMC";
new-res Mmio(0x4809c000 .. 0x4809dfff);
new-res Mmio(0x480b4000 .. 0x480b5fff);
new-res Mmio(0x480ad000 .. 0x480aefff);
}
}
mmiodev => new System_bus()
{
mmc => wrap(hw-root.mmc);
}
-------------------------------------------------------------------
local lxname = "vmlinuz.arm";
local DeviceFile = "beagle.devs"
local IOFile = "beagle.io"
local loader = L4.default_loader;
local io_bus = loader:new_channel();
loader:start({
caps = {
mmiodev = io_bus:svr(),
icu = L4.Env.icu,
sigma0 = L4.cast(L4.Proto.Factory, L4.Env.sigma0):create(L4.Proto.Sigma0),
},
},
"rom/io -vv rom/" .. DeviceFile .. " rom/" .. IOFile);
loader:start(
{ caps = {
vbus = io_bus,
icu = L4.Env.icu,
log = L4.Env.log:m("rws"),
},
l4re_dbg = L4.Dbg.Warn,
log = { "l4linux", "yellow" },
},
"rom/" .. lxname .. " root=/dev/mmcblk0p2 rw rootfstype=ext3 init=/sbin/init console=ttyLv0");
---------------------------------------------------------------------------------------
...
L4 serial driver
ttyLv0 at MMIO 0x1 (irq = 210) is a L4
L4 shared mem serial driver
l4cdds: No name given, not starting.
brd: module loaded
l4bdds: No name given, not starting.
mousedev: PS/2 mouse device common for all mice
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
TCP cubic registered
NET: Registered protocol family 17
VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0)
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[<00129d68>] (unwind_backtrace+0x0/0xf0) from [<00335858>] (panic+0x58/0x178)
[<00335858>] (panic+0x58/0x178) from [<00100aa0>] (mount_block_root+0x1d4/0x294)
[<00100aa0>] (mount_block_root+0x1d4/0x294) from [<00100e24>] (prepare_namespace
+0x164/0x1bc)
[<00100e24>] (prepare_namespace+0x164/0x1bc) from [<00100794>] (kernel_init+0xe4
/0x118)
[<00100794>] (kernel_init+0xe4/0x118) from [<00122410>] (kernel_thread_exit+0x0/
0x8)
panic: going to sleep forever, bye
l4linux | panic: going to sleep forever, bye