[参考译文] TMS570LS1227：针对 Cortex R4 (TMS570LS1227)和 ARM R4手册的 FreeRTOS MPU #defines。

admin

Guru**** 2028300 points

Other Parts Discussed in Thread: HALCOGEN

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1001306/tms570ls1227-freertos-mpu-defines-for-cortex-r4-tms570ls1227-and-arm-r4-manual

器件型号：TMS570LS1227
主题中讨论的其他器件：HALCOGEN

我正在尝试将 MPU #defines 调和为 HalCoGen 在 os_portmacro.h 中为目标生成的：

Fullscreen

1
2
3
4
5
6
7
8
9
10
11
12
#define portMPU_PRIV_NA_USER_NA_EXEC    ( 0x0000UL ) /**< Alias no access in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RW_USER_NA_EXEC    ( 0x0100UL ) /**< Alias no read/write in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RW_USER_RO_EXEC    ( 0x0200UL ) /**< Alias no read/write in privileged mode, read only in user mode and execute */
#define portMPU_PRIV_RW_USER_RW_EXEC    ( 0x0300UL ) /**< Alias no read/write in privileged mode, read/write in user mode and execute */
#define portMPU_PRIV_RO_USER_NA_EXEC    ( 0x0500UL ) /**< Alias no read only in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RO_USER_RO_EXEC    ( 0x0600UL ) /**< Alias no read only in privileged mode, read only in user mode and execute */
#define portMPU_PRIV_NA_USER_NA_NOEXEC  ( 0x1000UL ) /**< Alias no access in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RW_USER_NA_NOEXEC  ( 0x1100UL ) /**< Alias no read/write in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RW_USER_RO_NOEXEC  ( 0x1200UL ) /**< Alias no read/write in privileged mode, read only in user mode and no execution */
#define portMPU_PRIV_RW_USER_RW_NOEXEC  ( 0x1300UL ) /**< Alias no read/write in privileged mode, read/write in user mode and no execution */
#define portMPU_PRIV_RO_USER_NA_NOEXEC  ( 0x1500UL ) /**< Alias no read only in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RO_USER_RO_NOEXEC  ( 0x1600UL ) /**< Alias no read only in privileged mode, read only in user mode and no execution */
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#define portMPU_PRIV_NA_USER_NA_EXEC    ( 0x0000UL ) /**< Alias no access in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RW_USER_NA_EXEC    ( 0x0100UL ) /**< Alias no read/write in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RW_USER_RO_EXEC    ( 0x0200UL ) /**< Alias no read/write in privileged mode, read only in user mode and execute */
#define portMPU_PRIV_RW_USER_RW_EXEC    ( 0x0300UL ) /**< Alias no read/write in privileged mode, read/write in user mode and execute */
#define portMPU_PRIV_RO_USER_NA_EXEC    ( 0x0500UL ) /**< Alias no read only in privileged mode, no access in user mode and execute */
#define portMPU_PRIV_RO_USER_RO_EXEC    ( 0x0600UL ) /**< Alias no read only in privileged mode, read only in user mode and execute */
#define portMPU_PRIV_NA_USER_NA_NOEXEC  ( 0x1000UL ) /**< Alias no access in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RW_USER_NA_NOEXEC  ( 0x1100UL ) /**< Alias no read/write in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RW_USER_RO_NOEXEC  ( 0x1200UL ) /**< Alias no read/write in privileged mode, read only in user mode and no execution */
#define portMPU_PRIV_RW_USER_RW_NOEXEC  ( 0x1300UL ) /**< Alias no read/write in privileged mode, read/write in user mode and no execution */
#define portMPU_PRIV_RO_USER_NA_NOEXEC  ( 0x1500UL ) /**< Alias no read only in privileged mode, no access in user mode and no execution */
#define portMPU_PRIV_RO_USER_RO_NOEXEC  ( 0x1600UL ) /**< Alias no read only in privileged mode, read only in user mode and no execution */

使用 ARM R4中的访问控制寄存器手册：

然后说： #define portMPU_PRIV_RW_USER_RW_EXEC (0x0300UL)/**<在特权模式下不能读取/写入别名，在用户模式下读取/写入并执行*/

应为 X300 =位8和9、 AP b011、这是完全读取/写入任何模式且执行正常。但为什么描述中会显示“别名不可读/写…… "？

实际上每行都有"否"、因此这必须是拼写错误。

还想问：

#define portMPU_PRIV_NA_USER_NA_EXEC (0x0000UL)/**<在特权模式下无访问权限、在用户模式下无访问权限并执行*/
与
#define portMPU_PRIV_NA_USER_NA_NOexec ( 0x1000UL )/**<别名：在特权模式下无访问权限，在用户模式下无访问权限，不执行*/

根据，在任何模式下，宏似乎都不能访问，但仍可执行。？ (全0 1)。

另一方面、如果我想拥有特权模式只能读取、但非特权(例如、正常任务不是内核)读取和写入的区域、人们该怎么做？或者这毫无意义吗？
(例如，如果我要保护用户模式任务不受内核的影响... 是的，这听起来很糟糕，但假设我确实这么做了)

4 年多前

0 admin 4 年多前

TI__Guru**** 2028300 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

您好！

描述中有几个拼写错误。仅当 AP=1/2/3时、存储器区域在特权模式下可为 R/W、AP=5/6、在特权模式下为 RO。

是的、当 AP=0时、两种模式下都无法访问存储器区域。

从 ARM TRM 中、不存在这种设置：用户模式为 R/W、特权模式为 RO。

基于 Arm 的微控制器（参考译文帖）

基于 Arm 的微控制器（参考译文帖）(Read Only)

[参考译文] TMS570LS1227：针对 Cortex R4 (TMS570LS1227)和 ARM R4手册的 FreeRTOS MPU #defines。