TI中文支持网各位专家好，本人在将DRA75的demo板程序移植到目标板上，由于目标板的DDR是512M，demo板是1Gbyte的。在移植DDR部分时出现内存错误，
我修改的部分如下：
1、修改uboot的lisa寄存器，将512Mbyte映射到emif1上
static const struct dmm_lisa_map_regs lisa_map_dra7_1536MB = {
.dmm_lisa_map_0 = 0x0,
.dmm_lisa_map_1 = 0x0, .dmm_lisa_map_2 = 0x80600100,
.dmm_lisa_map_3 = 0xFF020100,
.is_ma_present = 0x1
};
2、修改了dra7-evm.dts的内存节点参数：
memory {
device_type = "memory";
reg = <0x80000000 0x20000000>; /* 512MB */
};
3、修改了环境变量mem=512M
修改后，从log信息看，在执行starting udev后出现以下错误：
Starting udev
[ 9.275574] udevd[1148]: starting version 182
[ 9.561763] modprobe invoked oom-killer: gfp_mask=0x2084d0, order=0, oom_score_adj=-1000
[ 9.569937] CPU: 0 PID: 1188 Comm: modprobe Tainted: G W 3.14.63-00013-gb677f9b-dirty #2
[ 9.578936] Backtrace:[ 9.581417] [<c0012138>] (dump_backtrace) from [<c00122d4>] (show_stack+0x18/0x1c)
[ 9.589018] r6:600f0113 r5:ffffffff r4:00000000 r3:00000000
[ 9.594746] [<c00122bc>] (show_stack) from [<c0692238>] (dump_stack+0x80/0xa0)
[ 9.602005] [<c06921b8>] (dump_stack) from [<c0690b84>] (dump_header+0x6c/0x180)
[ 9.609429] r7:002084d0 r6:00000000 r5:00000000 r4:c1f6a000
[ 9.615156] [<c0690b18>] (dump_header) from [<c00c1130>] (oom_kill_process+0x224/0x3d0)
[ 9.623192] r10:00000000 r8:002084d0 r7:00000000 r6:002084d0 r5:00000000 r4:c1a5da40
[ 9.631108] [<c00c0f0c>] (oom_kill_process) from [<c00c17b8>] (out_of_memory+0x2ec/0x354)
[ 9.639318] r10:00000000 r9:00000000 r8:002084d0 r7:00000000 r6:c0970228 r5:c0970390
[ 9.647222] r4:c0970228
[ 9.649781] [<c00c14cc>] (out_of_memory) from [<c00c58f8>] (__alloc_pages_nodemask+0x8b4/0x8fc)
[ 9.658514] r10:00000000 r9:c1f6a000 r8:c0a0f480 r7:c096ca78 r6:00000000 r5:c0a10080
[ 9.666418] r4:002084d0
[ 9.668977] [<c00c5044>] (__alloc_pages_nodemask) from [<c00dd65c>] (__pte_alloc+0x28/0x15c)
[ 9.677449] r10:c19706c0 r9:c1728dc0 r8:c1f6a000 r7:b6fa0000 r6:c1f10000 r5:c1f12db8
[ 9.685350] r4:c1f77580
[ 9.687907] [<c00dd634>] (__pte_alloc) from [<c00e0714>] (handle_mm_fault+0x788/0x81c)
[ 9.695854] r10:c19706c0 r8:c1f6a000 r7:b6fa0000 r6:c1f10000 r5:000005b7 r4:200f0113
[ 9.703766] [<c00dff8c>] (handle_mm_fault) from [<c0699a74>] (do_page_fault+0x2a4/0x444)
[ 9.711889] r10:c19706c0 r9:c1f775b8 r8:c1f77580 r7:b6fa087c r6:00000805 r5:c1f6be30
[ 9.719794] r4:c1f6a000
[ 9.722352] [<c06997d0>] (do_page_fault) from [<c0699cc4>] (do_translation_fault+0xb0/0xbc)
[ 9.730735] r10:b6f81000 r9:c1f00300 r8:c1f6be30 r7:b6fa087c r6:c0971dc0 r5:c0699c14
[ 9.738638] r4:00000805
[ 9.741194] [<c0699c14>] (do_translation_fault) from [<c00083e4>] (do_DataAbort+0x3c/0xa0)
[ 9.749491] r7:b6fa087c r6:c0971dc0 r5:c0699c14 r4:00000805
[ 9.755210] [<c00083a8>] (do_DataAbort) from [<c0697d20>] (__dabt_svc+0x40/0x60)
[ 9.762637] Exception stack(0xc1f6be30 to 0xc1f6be78)
[ 9.767711] be20: b6fa087c 0000077c 00000000 00000007
[ 9.775925] be40: c1f69e80 00000000 c1f86340 c1f6be90 c1f6a000 c1f00300 b6f81000 c1f6be8c
[ 9.784138] be60: 00000000 c1f6be78 c0141c18 c02ab78c 200f0113 ffffffff
[ 9.790777] r8:c1f6a000 r7:c1f6be64 r6:ffffffff r5:200f0113 r4:c02ab78c
[ 9.797554] [<c0141bc4>] (padzero) from [<c0142fd8>] (load_elf_binary+0x11cc/0x120c)
[ 9.805336] [<c0141e0c>] (load_elf_binary) from [<c00ff324>] (search_binary_handler+0x88/0x1a0)
[ 9.814068] r10:c1f86340 r9:00000001 r8:00000001 r7:fffffff8 r6:c09c2698 r5:c1f86340
[ 9.821972] r4:c09c2d10
[ 9.824528] [<c00ff29c>] (search_binary_handler) from [<c0100308>] (do_execve+0x414/0x4f0)
[ 9.832826] r8:00033220 r7:000004a4 r6:c1f6a000 r5:c1f65000 r4:c19706c0 r3:00000000
[ 9.840645] [<c00ffef4>] (do_execve) from [<c01005b0>] (SyS_execve+0x24/0x28)
[ 9.847809] r10:00000000 r9:c1f6a000 r8:c000ed04 r7:0000000b r6:00033220 r5:be82d060
[ 9.855712] r4:00033220
[ 9.858267] [<c010058c>] (SyS_execve) from [<c000eb80>] (ret_fast_syscall+0x0/0x38)
[ 9.865953] r5:00032544 r4:ffffe5f8
[ 9.869693] Mem-info:
[ 9.871978] Normal per-cpu:
[ 9.875939] CPU 0: hi: 0, btch: 1 usd: 0
[ 9.880868] CPU 1: hi: 0, btch: 1 usd: 0
[ 9.885791] active_anon:3327 inactive_anon:768 isolated_anon:0
[ 9.885791] active_file:14 inactive_file:46 isolated_file:0
[ 9.885791] unevictable:0 dirty:2 writeback:0 unstable:0
[ 9.885791] free:54251 slab_reclaimable:551 slab_unreclaimable:1554
[ 9.885791] mapped:12 shmem:768 pagetables:167 bounce:0
[ 9.885791] free_cma:54025
[ 9.917246] Normal free:217364kB min:1984kB low:2480kB high:2976kB active_anon:13308kB inactive_anon:3072kB active_file:92kB inactive_file:164kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:523264kB managed:246660kB mlocked:0kB dirty:8kB writeback:0kB mapped:48kB shmem:3072kB slab_reclaimable:1916kB slab_unreclaimable:6216kB kernel_stack:792kB pagetables:668kB unstable:0kB bounce:0kB free_cma:216100kB writeback_tmp:0kB pages_scanned:1692 all_unreclaimable? yes
[ 9.959662] lowmem_reserve[]: 0 0 0
[ 9.963297] Normal: 1003*4kB (UEMC) 992*8kB (UMC) 989*16kB (EMC) 989*32kB (EMC) 988*64kB (UEMC) 576*128kB (MC) 82*256kB (C) 0*512kB 0*1024kB 0*2048kB 0*4096kB 0*8192kB = 217372kB
[ 9.979696] 874 total pagecache pages
[ 9.983395] 0 pages in swap cache
[ 9.986727] Swap cache stats: add 0, delete 0, find 0/0
[ 9.992055] Free swap = 0kB
[ 9.994968] Total swap = 0kB
[ 10.000647] 131072 pages of RAM
[ 10.003839] 54582 free pages
[ 10.006850] 69407 reserved pages
[ 10.010107] 1961 slab pages
[ 10.013012] 2252 pages shared
[ 10.015999] 0 pages swap cached
[ 10.019157] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
[ 10.027061] [ 1126] 0 1126 330 15 3 0 0 init
[ 10.034945] [ 1127] 0 1127 558 48 4 0 0 rc
[ 10.042782] [ 1140] 0 1140 558 49 3 0 0 S04udev
[ 10.050918] [ 1148] 0 1148 754 148 4 0 -1000 udevd
[ 10.058895] [ 1151] 0 1151 654 68 4 0 -1000 udevd
[ 10.066902] [ 1153] 0 1153 720 142 4 0 -1000 udevd
[ 10.074877] [ 1154] 0 1154 720 141 4 0 -1000 udevd
[ 10.082848] [ 1155] 0 1155 720 140 4 0 -1000 udevd
[ 10.090806] [ 1156] 0 1156 720 142 4 0 -1000 udevd
[ 10.098777] [ 1157] 0 1157 720 142 4 0 -1000 udevd
[ 10.106748] [ 1158] 0 1158 720 144 4 0 -1000 udevd
[ 10.114781] [ 1159] 0 1159 720 144 4 0 -1000 udevd
[ 10.122754] [ 1160] 0 1160 720 144 4 0 -1000 udevd
[ 10.130712] [ 1161] 0 1161 720 144 4 0 -1000 udevd
[ 10.138682] [ 1165] 0 1165 91 2 2 0 -1000 modprobe
[ 10.146914] [ 1167] 0 1167 679 104 4 0 -1000 udevd
[ 10.154882] [ 1168] 0 1168 679 104 4 0 -1000 udevd
[ 10.162852] [ 1169] 0 1169 748 147 4 0 -1000 udevd
[ 10.170809] [ 1170] 0 1170 753 147 4 0 -1000 udevd
[ 10.178779] [ 1171] 0 1171 753 147 4 0 -1000 udevd
[ 10.186750] [ 1172] 0 1172 753 147 4 0 -1000 udevd
[ 10.194881] [ 1173] 0 1173 753 147 4 0 -1000 udevd
[ 10.202877] [ 1174] 0 1174 753 147 4 0 -1000 udevd
[ 10.210837] [ 1175] 0 1175 753 147 4 0 -1000 udevd
[ 10.218808] [ 1176] 0 1176 753 147 4 0 -1000 udevd
[ 10.226777] [ 1177] 0 1177 753 147 4 0 -1000 udevd
[ 10.234746] [ 1178] 0 1178 753 148 4 0 -1000 udevd
[ 10.242716] [ 1179] 0 1179 753 148 4 0 -1000 udevd
[ 10.250673] [ 1180] 0 1180 720 140 4 0 -1000 udevd
[ 10.258642] [ 1181] 0 1181 91 2 2 0 -1000 modprobe
[ 10.266902] [ 1182] 0 1182 91 2 2 0 -1000 modprobe
[ 10.275136] [ 1183] 0 1183 91 2 2 0 -1000 modprobe
[ 10.283367] [ 1184] 0 1184 91 2 2 0 -1000 modprobe
[ 10.291586] [ 1186] 0 1186 92 3 3 0 -1000 modprobe
[ 10.299820] [ 1187] 0 1187 91 2 2 0 -1000 modprobe
[ 10.308051] [ 1188] 0 1188 91 2 2 0 -1000 modprobe
[ 10.316282] [ 1189] 0 1189 753 147 4 0 -1000 udevd
[ 10.324251] [ 1190] 0 1190 753 147 4 0 -1000 udevd
[ 10.332209] [ 1191] 0 1191 754 149 4 0 -1000 udevd
[ 10.340179] [ 1192] 0 1192 753 147 4 0 -1000 udevd
[ 10.348177] [ 1193] 0 1193 754 151 4 0 -1000 udevd
[ 10.356149] [ 1194] 0 1194 753 147 4 0 -1000 udevd
[ 10.364172] [ 1195] 0 1195 754 151 4 0 -1000 udevd
正常的demo板上是这样的：
Starting udev
[ 9.085192] udevd[1149]: starting version 182
[ 9.623337] omap-dwc3 48880000.omap_dwc3_1: unable to get extcon device : extcon_usb1
[ 9.713208] platform 48880000.omap_dwc3_1: Driver omap-dwc3 requests probe deferral
[ 9.721286] omap-dwc3 488c0000.omap_dwc3_2: unable to get extcon device : extcon_usb2
[ 9.850250] platform 488c0000.omap_dwc3_2: Driver omap-dwc3 requests probe deferral
[ 10.062400] remoteproc0: powering up 58820000.ipu
[ 10.083561] remoteproc0: Booting fw image dra7-ipu1-fw.xem4, size 486020
[ 10.122742] omap-iommu 58882000.mmu: 58882000.mmu: version 2.1
[ 10.165710] remoteproc0: remote processor 58820000.ipu is now up
[ 10.173444] virtio_rpmsg_bus virtio0: rpmsg host is online
[ 10.179190] i2c 1-006c: Driver fpd3_serdes requests probe deferral
[ 10.185453] remoteproc0: registered virtio0 (type 7)
[ 10.190838] i2c 1-0061: Driver fpd3_serdes requests probe deferral
[ 10.214396] i2c 1-0069: Driver fpd3_serdes requests probe deferral
[ 10.224035] i2c 1-0037: Driver ov1063x requests probe deferral
[ 10.231368] i2c 1-0030: Driver ov1063x requests probe deferral
[ 10.238700] i2c 1-0060: Driver fpd3_serdes requests probe deferral
[ 10.245062] i2c 1-0064: Driver fpd3_serdes requests probe deferral
[ 10.251397] i2c 1-0068: Driver fpd3_serdes requests probe deferral
[ 10.258194] omap-dwc3 48880000.omap_dwc3_1: unable to get extcon device : extcon_usb1
[ 10.266220] platform 48880000.omap_dwc3_1: Driver omap-dwc3 requests probe deferral
[ 10.274322] omap-dwc3 488c0000.omap_dwc3_2: unable to get extcon device : extcon_usb2
[ 10.282229] platform 488c0000.omap_dwc3_2: Driver omap-dwc3 requests probe deferral
[ 10.380885] m25p80 spi32766.0: s25fl256s1 (32768 Kbytes)
[ 10.386396] 10 ofpart partitions found on MTD device spi32766.0
[ 10.392348] Creating 10 MTD partitions on "spi32766.0":
[ 10.397638] 0x000000000000-0x000000010000 : "QSPI.SPL"
[ 10.403893] 0x000000010000-0x000000020000 : "QSPI.SPL.backup1"
[ 10.410746] 0x000000020000-0x000000030000 : "QSPI.SPL.backup2"
[ 10.417573] 0x000000030000-0x000000040000 : "QSPI.SPL.backup3"
[ 10.424448] 0x000000040000-0x000000140000 : "QSPI.u-boot"
[ 10.430824] 0x000000140000-0x0000001c0000 : "QSPI.u-boot-spl-os"
[ 10.437866] 0x0000001c0000-0x0000001d0000 : "QSPI.u-boot-env"
[ 10.444654] 0x0000001d0000-0x0000001e0000 : "QSPI.u-boot-env.backup1"
[ 10.452200] 0x0000001e0000-0x0000009e0000 : "QSPI.kernel"
[ 10.458578] 0x0000009e0000-0x000002000000 : "QSPI.file-system"
[ 10.465636] i2c 1-006c: Driver fpd3_serdes requests probe deferral
[ 10.472853] i2c 1-0061: Driver fpd3_serdes requests probe deferral
[ 10.493437] i2c 1-0069: Driver fpd3_serdes requests probe deferral
[ 10.500716] i2c 1-0037: Driver ov1063x requests probe deferral
[ 10.506821] i2c 1-0030: Driver ov1063x requests probe deferral
[ 10.512803] i2c 1-0060: Driver fpd3_serdes requests probe deferral
[ 10.519142] i2c 1-0064: Driver fpd3_serdes requests probe deferral
[ 10.525481] i2c 1-0068: Driver fpd3_serdes requests probe deferral
[ 10.532211] omap-dwc3 48880000.omap_dwc3_1: unable to get extcon device : extcon_usb1
[ 10.540141] platform 48880000.omap_dwc3_1: Driver omap-dwc3 requests probe deferral
[ 10.548301] omap-dwc3 488c0000.omap_dwc3_2: unable to get extcon device : extcon_usb2
[ 10.556252] platform 488c0000.omap_dwc3_2: Driver omap-dwc3 requests probe deferral
上述问题已经研究一个星期了，依然没有找到头绪，烦请各位专家帮忙看下问题出在什么地方，谢谢！！
Shine：
抱歉，目前汽车Jacintio系列芯片不通过论坛进行支持。
tianqiang zheng：
回复 Shine:
还有其他途径进行技术支持吗？
Shine：
回复 tianqiang zheng:
可以到e2e上问问。https://e2e.ti.com/support/arm/automotive_processors/f/1020
