Hi,
On Thu Apr 24, 2014 at 11:21:18 +0900, Taeung wrote:
I'm trying to secure devices which are 'SD card' and 'Ethernet' on L4 Linux. Can you confirm whether or not I secure devices on L4 Linux ? Sorry for long my mail..
The try I've done is as follows ..
- 'l4lx-vbus.io' file I've modified
==================== # vim:set ft=ioconfig: # configuration file for io
l4linux => new System_bus() { NIC => wrap(hw-root.NIC); FLASHMEMORY => wrap(hw-root.FLASHMEMORY); } ====================
- 'arm-rv-eb-mc.devs' file I've modified using IRQ and MMIO information in
my board's DataSheet . (My board is 'Freescale imx6 Quad SABRE SD') ==================== local Hw = Io.Hw local Res = Io.Res
Io.hw_add_devices {
FLASHMEMORY = Hw.Device { hid = "flashmemory"; Res.mmio(0x02198000 , 0x0219BFFF); Res.irq(56); },
NIC = Hw.Device { hid = "freescale"; Res.mmio(0x02188000, 0x0218BFFF); Res.irq(150); Res.irq(151); }, } ====================
- l4lx_xs.cfg I've modified.
==================== local lxname = "vmlinuz"; if L4.Info.arch() == "arm" then lxname = "vmlinuz.arm"; end
loader = L4.default_loader;
vbus_l4linux = loader:new_channel();
-- Start io & flash memory
loader:start( { caps = { sigma0 = L4.cast(L4.Proto.Factory,L4.Env.sigma0):create(L4.Proto.Sigma0); icu = L4.Env.icu; l4linux = vbus_l4linux:svr(); }, log = { "IO", "y" }, l4re_dbg = L4.Dbg.Warn, }, "rom/io rom/arm-rv-eb-mc.devs rom/l4lx-vbus.io");
L4.default_loader:start( { caps = { log = L4.Env.log:m("rws"), vbus = vbus_l4linux; }, l4re_dbg = L4.Dbg.Warn, log = { "l4linux", "yellow" }, }, "rom/" .. lxname .. " mem=64M vmalloc=4M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd root=1:0 rw ramdisk_size=20480 init=/linuxrc debug"); ====================
- I've modified 'modules.list'
- I found something about device on L4 Linux booting log as follows..
The configs look good.
l4linux | Device scan: l4linux | Device: (noname) l4linux | Device: NIC l4linux | MEM: 02188000 - 0218bfff l4linux | IRQ: 00000096 - 00000096 l4linux | IRQ: 00000097 - 00000097 l4linux | Device: FLASHMEMORY l4linux | MEM: 02198000 - 0219bfff l4linux | IRQ: 00000038 - 00000038 l4linux | Device scan done.
|| ||||...(omitted)
|||DMA: preallocated 256 KiB pool for atomic coherent allocations Added static device '(noname)' with 0 resources. Added static device 'NIC' with 3 resources. Added static device 'FLASHMEMORY' with 2 resources.
...(|||omitted|)
mmcblk driver (I've added 'pr_info("|||mmcblk driver|");' in __init function of mmc device driver source code.)
...(|||omitted|)|
Here I'd suggest you start L4Linux with init=/bin/sh to not start the system right away but check whether devices are ok. For the block device, there must be some output about partitions for example (also make sure CONFIG_MSDOS_PARTITION is enabled), like this: mmc0: new high speed SDHC card at address b368 mmcblk0: mmc0:b368 USD 3.72 GiB mmcblk0: p1 p2 You can also check /proc/partitions (mount it before).
For the network, there must be a network device. Check that with ifconfig -a whether there's an eth0.
I guess that devices is secured through being registered in io server but network could not be run because there is not FEC ethernet driver. (For reference, my board's ethernet use 'FEC Ethernet Driver' )
However I don't know why could not run 'mount /dev/mmcblk0p1 /mnt '.
Likely because the driver that some issues finishing its initialization? Did it run its probe function to the point where it does return 0?
Do I secure devices on L4 Linux successfully ? If I only make drivers for its to run successfully , can I access 'SD card' and 'Ethernet' on L4Linux ? Or is my guess wrong ?
No, you're on the way.
Adam