TMS320C6678: 虚拟地址到物理地址重映射

user4646084

Part Number: TMS320C6678

stk 的Memory_Test 工程：

#pragma DATA_SECTION(XMC_MPAX_cfg_table,".far:Core_MPAX")
MPAX_Config XMC_MPAX_cfg_table[]=
{
/*BADDR RADDR SegementSize AccessPermisionMask
32-bit virtual 36-bit physical in byte, must Access types allowed
base address address right be power of 2 in this address range
shift by 4 */
// {0x0e00000, 0x00C000000>>4, 4*1024*1024, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*SL2, RWX*/
// {0x10000000, 0x010000000>>4, 0x08000000, MP_SR|MP_SW|MP_UR|MP_UW},/*L1, LL2 global address space, RW*/
// {0x18000000, 0x00C000000>>4, 4*1024*1024, MP_SR|MP_SW|MP_UR|MP_UW},/*remap Shared L2 to 0x18000000 for test*/
// {0x21000000, 0x100000000>>4, 4*1024, MP_SR|MP_SW|MP_UR|MP_UW},/*map DDR2 configuration registers at physical address 0x1:00000000 to logical address 0x21000000*/
{0x90000000, 0x800000000>>4, 0x10000000, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX}/*DDR, RWX*/
};

我用0核重映射后修改0x90000000 处的值，再在1核（没有进行重映射，用的默认值）查看0x80000000的值，并没有变化

1 年多前

+1 user4646084 1 年多前

Intellectual 340 points

{0x00000000, 0x000000000>>4, 0x80000000, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*DDR, RWX*/
{0x80000000, 0x800000000>>4, 0x20000000, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*DDR, RWX*/
{0xA0000000, 0xA00000000>>4, 64*1024*1024, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*DDR, RWX*/
{0xA4000000, 0xA40000000>>4, 64*1024*1024, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*DDR, RWX*/
{0xC0000000, 0xC00000000>>4, 0x40000000, MP_SR|MP_SW|MP_SX|MP_UR|MP_UW|MP_UX},/*DDR, RWX*/
};

我们最总按这个使用，但是0xA4000000 、0xA0000000 并未映射到0xA4000000，0xA0000000 上反而映射到0xC0000000上了，这是怎么回事了？？？？？

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TMS320C6678: 虚拟地址到物理地址重映射