rt-thread.git/libcpu/arm/am335x/mmu.c, branch copilot/create-dfs2-documentation

[rtdef] use lower-case to define attributes (#6728)

2022-12-11T18:12:03Z

* [rtdef] rename RT_WEAK attribute as rt_weak * [rtdef] rename RT_USED attribute as rt_used * [rtdef] rename RT_SECTION attribute as rt_section * [rtdef] rename ALIGN attribute as rt_align * [legacy] add RT_USED ALIGN RT_SECTION RT_WEAK as legacy support

bsp beaglebone: add IAR support (#6443)

2022-09-22T06:13:34Z

* bsp beaglebone: add IAR template files and fix it's build error ATTENTION: project.* was generated by scons, so I add it to gitignore. rtconfig.py *FLAGS located in "PLATFORM == 'iccarm'" are unverified and maybe wrong. （我只是从STM32里面抄来，然后根据自己的理解改了一下，并没有验证这些参数的正确性，我也不知道怎么用命令行调用这些参数来编译） * bsp beaglebone: add beaglebone_ram.icf ROM address from uboot_cmd.txt am335x_DDR.icf use 0x82000000, different to uboot_cmd.txt & gcc beaglebone_ram.lds, the difference will easy cause later developer got below error: => go 0x80200000 ## Starting application at 0x80200000 ... undefined instruction pc : [<8200956c>] lr : [<8ff62497>] reloc pc : [<728a956c>] lr : [<80802497>] sp : 8df37358 ip : 00000000 fp : 00000002 r10: 8df4d448 r9 : 8df3feb8 r8 : 8ffd30f8 r7 : 8ff78089 r6 : 00000002 r5 : 80200000 r4 : 8df4d44c r3 : 80200000 r2 : 8df4d44c r1 : 8df4d44c r0 : 00000001 Flags: nzCv IRQs off FIQs on Mode SVC_32 Code: 5dbffcdd bb9bdf7f abf85423 eff1f77f (7ed7daaf) Resetting CPU ... resetting ... * libcpu am335x: context_iar.S rt_hw_context_switch: add thumb mode support IAR new project defualt Processor mode is Thumb, this will cause user easy occur the following error: ... msh />Execption: r00:0x8800aaa8 r01:0x802080c5 r02:0x00000000 r03:0x88009b4c r04:0x00001000 r05:0x00000000 r06:0x00001403 r07:0x00100000 r08:0x00000000 r09:0x00000000 r10:0x0000000a fp :0x0000000a ip :0x65687374 sp :0x00006c6c lr :0x0000008a pc :0x88008be0 cpsr:0x880001bc software interrupt shutdown... (0) assertion failed at function:rt_hw_cpu_shutdown, line number:160 * bsp beaglebone: change IAR template.ewp code use Arm mode Arm mode bin size will bigger than Thumb mode * libcpu am335x: IAR: use rt_hw_cpu_dcache_enable instead of rt_cpu_dcache_enable Reviewer mysterywolf say: 麻烦把rt_cpu_icache_enable 和 rt_cpu_dcache_enable, 统一改成 rt_hw_cpu_icache_enable 和 rt_hw_cpu_dcache_enable rt_hw_cpu_icache_enable 和 rt_hw_cpu_dcache_enable 是其他bsp也是这么命名的这是个命名统一的函数

[libcpu] auto formatted

2021-03-27T09:51:56Z

[license] Change the license of libarm to Apache.

2018-10-14T17:35:07Z

修正am335x中mmu问题

2018-09-15T03:37:14Z

1) mmu_disable_dcache/mmu_enable_dcache等, 应使用rt_cpu_xxx相关函数,否则会跑飞. armcc并没有提供rt_cpu_xxx对应汇编代码,先删除 2) mmu_setmtt抽取为函数mmu_setmtts,并增加RT_WEAK.mmu_setmtts此处作为示例函数.实际用户板子可在bsp中重新实现该函数.可在rt_components_board_init函数前调用rt_hw_mmu_init

[libcpu] add volatile for __asm.

2017-11-22T01:54:36Z

[libcpu] add volatile for asm (" mcr ") or asm (" mrc ") instruct.

2017-11-22T01:54:27Z

[libcpu][am335x] Fix the booting failure when enabling MMU

2015-05-11T02:36:11Z

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.

Import beaglebone porting

2013-09-20T13:20:51Z