> With some kernels, not all memory is allocated to the kernel unless you pass > "mem=0" on the command line. > > Since special Octeon code consumes the "mem=..." parameter, it isn't > available in userspace after the kernel is booted, so you must look at what > is done in u-boot. Well, that didn't work out too well (see below). Do I need to tweak the device tree or 'arch/mips/cavium-octeon/setup.c' for my specific board? Allocated memory for ELF segment: addr: 0x1100000, size 0x2628a48 Loading .text @ 0x81100000 (0x35ca1c bytes) Loading __ex_table @ 0x8145ca20 (0x57c0 bytes) Loading .rodata @ 0x81463000 (0xca880 bytes) Loading .pci_fixup @ 0x8152d880 (0x1db8 bytes) Loading __ksymtab @ 0x8152f638 (0xbdd0 bytes) Loading __ksymtab_gpl @ 0x8153b408 (0x6710 bytes) Loading __ksymtab_strings @ 0x81541b18 (0x14cfd bytes) Loading __param @ 0x81556818 (0x988 bytes) Clearing __modver @ 0x815571a0 (0xe60 bytes) Loading .data @ 0x81558000 (0x3bbd8 bytes) Loading .data..page_aligned @ 0x81594000 (0x4000 bytes) Loading .init.text @ 0x81598000 (0x278b4 bytes) Loading .init.data @ 0x815bf8c0 (0x12390 bytes) Loading .data..percpu @ 0x815d2000 (0x3eb0 bytes) Clearing .bss @ 0x816e0000 (0x2048a48 bytes) ## Loading OS kernel with entry point: 0x81107920 ... Bootloader: Done loading app on coremask: 0x1 [ 0.000000] Linux version 4.4.92 (gkuri@galileo) (gcc version 5.4.0 (LEDE GCC 5.4.0 r3560-79f57e4227 [ 0.000000] CVMSEG size: 2 cache lines (256 bytes) [ 0.000000] bootconsole [early0] enabled [ 0.000000] CPU0 revision is: 000d0601 (Cavium Octeon+) [ 0.000000] Checking for the multiply/shift bug... no. [ 0.000000] Checking for the daddiu bug... no. [ 0.000000] Determined physical RAM map: [ 0.000000] memory: 0000000000800000 @ 0000000003800000 (usable) [ 0.000000] memory: 0000000002628a48 @ 0000000001100000 (usable) [ 0.000000] Wasting 243712 bytes for tracking 4352 unused pages [ 0.000000] Using internal Device Tree. [ 0.000000] bootmem alloc of 8388608 bytes failed! [ 0.000000] Kernel panic - not syncing: Out of memory [ 0.000000] Rebooting in 1 seconds..
