Unnamed repository; edit this file 'description' to name the repository. http://cgit.235523.xyz/rt-thread.git/atom/libcpu/arm/am335x/mmu.c?h=v3.0.2 2017-11-22T01:54:36Z 2017-11-22T01:54:36Z SummerGift zy_770077@qq.com 2017-11-21T09:18:33Z urn:sha1:eb72d191791c72080bc82e1e274c452265e03c5b 2017-11-22T01:54:27Z SummerGift zy_770077@qq.com 2017-11-21T09:08:49Z urn:sha1:2488624a184fced9df5b2c03c55e1f6db683512e 2015-05-11T02:36:11Z Adrian Huang adrianhuang0701@gmail.com 2015-05-11T01:57:12Z urn:sha1:42226779338716fbef7ab4eab6386fe3462912ae Since the 16 domains are configured as the client domains in mmu_setttbase(), a Permission fault is generated if the XN bit (Execute-never) is set in the short-descriptor translation table (for section and supersection). This leads to the booting failure when enabling MMU for beagleboard bsp. Here is log: ---------------------------------------------------------------- SD/MMC found on device 0 reading uEnv.txt 117 bytes read in 3 ms (38.1 KiB/s) Loaded environment from uEnv.txt Importing environment from mmc ... Running uenvcmd ... reading rtthread.bin 162624 bytes read in 24 ms (6.5 MiB/s) \## Starting application at 0x80200000 ... ---------------------------------------------------------------- This commit removes the XN bit configuration in the section of the short-descriptor translation table. The OS can be booted successfully with applying this commit. 2013-09-20T13:20:51Z bernard bernard.xiong@gmail.com 2013-09-20T13:20:51Z urn:sha1:9d09cd9f239ae95b41defb4f02e554e57e7f3903