Hey,
I tried to restrict the linux memory to 500mb (Zedboard) via bootargs in the dts file, which looks like
bootargs = "console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=0 mem=500";
and I tried it with offsetting
bootargs = "console=ttyPS0,115200 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=0 mem=500 memmap=500@12";
but both settings give me an error at boot time.
Copying Linux from SD to RAM...
reading uImage
3097944 bytes read in 280 ms (10.6 MiB/s)
reading devicetree.dtb
9658 bytes read in 20 ms (470.7 KiB/s)
## Booting kernel from Legacy Image at 03000000 ...
Image Name: Linux-3.13.0-gad9b7ee-dirty
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3097880 Bytes = 3 MiB
Load Address: 00008000
Entry Point: 00008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 02a00000
Booting using the fdt blob at 0x2a00000
Loading Kernel Image ... OK
Loading Device Tree to 1fb4c000, end 1fb515b9 ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.13.0-gad9b7ee-dirty (root@localhost.localdomain) (gcc version 4.6.1 (Sourcery CodeBench Lite 2011.09-50) ) #1 SMP PREEMPT Fri May 2 16:27:52 CEST 2014
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: Xilinx Zynq ZED
bootconsole [earlycon0] enabled
cma: CMA: failed to reserve 40 MiB
Memory policy: Data cache writealloc
Kernel panic - not syncing: ERROR: Failed to allocate 0x2000 bytes below 0x0.
CPU: 0 PID: 0 Comm: swapper Not tainted 3.13.0-gad9b7ee-dirty #1
[<c001357c>] (unwind_backtrace+0x0/0xe0) from [<c0010aa0>] (show_stack+0x10/0x14)
[<c0010aa0>] (show_stack+0x10/0x14) from [<c03b3ea0>] (dump_stack+0x7c/0xcc)
[<c03b3ea0>] (dump_stack+0x7c/0xcc) from [<c03b2690>] (panic+0x84/0x1d8)
[<c03b2690>] (panic+0x84/0x1d8) from [<c05671b8>] (memblock_alloc_base+0x2c/0x34)
[<c05671b8>] (memblock_alloc_base+0x2c/0x34) from [<c055eeac>] (early_alloc_aligned+0xc/0x2c)
[<c055eeac>] (early_alloc_aligned+0xc/0x2c) from [<c055faec>] (paging_init+0x574/0x840)
[<c055faec>] (paging_init+0x574/0x840) from [<c055c894>] (setup_arch+0x42c/0x858)
[<c055c894>] (setup_arch+0x42c/0x858) from [<c05597fc>] (start_kernel+0x80/0x3
I used the 3 Month old kernel and HDL from adi with some extra FLAGS in the kernel config, to support USB Camera and with a custom IP + VDMA in the PL region.
Does annyone know how I can get rid of the boot problem?