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[rt-smart] PV_OFFSET as a variable (#6904)

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* [rt-smart/mem] remove pv_offset

* [rt-smart] list kernel space command

* [rt-smart] restore ioremap region

* [revert] restore kernel space isolation

* [rt-smart/pv_off] code format

* [rt-smart] add get_pvoff()

* [pvoffset] pvoff as constant for C codes

* [pvoff] pvoff as interfaces
This commit is contained in:
Shell
2023-02-14 23:08:32 +08:00
committed by GitHub
parent fc1aced665
commit 2d09749086
23 changed files with 122 additions and 64 deletions
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libcpu/arm/cortex-a/mmu.c
+2 -1
View File
@@ -24,7 +24,6 @@
#include "ioremap.h"
#else
#define KERNEL_VADDR_START 0
#define PV_OFFSET 0
#endif
/* level1 page table, each entry for 1MB memory. */
@@ -59,6 +58,8 @@ void rt_hw_init_mmu_table(struct mem_desc *mdesc, rt_uint32_t size)
/* set page table */
for(; size > 0; size--)
{
if (mdesc->paddr_start == (rt_uint32_t)ARCH_MAP_FAILED)
mdesc->paddr_start = mdesc->vaddr_start + PV_OFFSET;
rt_hw_mmu_setmtt(mdesc->vaddr_start, mdesc->vaddr_end,
mdesc->paddr_start, mdesc->attr);
mdesc++;
libcpu/arm/cortex-a/start_gcc.S
+16 -4
View File
@@ -102,7 +102,10 @@ continue:
isb
#ifdef RT_USING_SMART
ldr r5, =PV_OFFSET
/* load r5 with PV_OFFSET */
ldr r7, =_reset
adr r5, _reset
sub r5, r5, r7
mov r7, #0x100000
sub r7, #1
@@ -166,6 +169,9 @@ bss_loop:
strlo r0,[r1],#4 /* clear 4 bytes */
blo bss_loop /* loop until done */
mov r0, r5
bl rt_kmem_pvoff_set
#ifdef RT_USING_SMP
mrc p15, 0, r1, c1, c0, 1
mov r0, #(1<<6)
@@ -173,7 +179,10 @@ bss_loop:
mcr p15, 0, r1, c1, c0, 1 /* enable smp */
#endif
/* initialize the mmu table and enable mmu */
/**
* void rt_hw_init_mmu_table(struct mem_desc *mdesc, rt_uint32_t size)
* initialize the mmu table and enable mmu
*/
ldr r0, =platform_mem_desc
ldr r1, =platform_mem_desc_size
ldr r1, [r1]
@@ -595,16 +604,19 @@ vector_resv:
bl rt_hw_trap_resv
b .
#ifdef RT_USING_SMP
.global rt_hw_clz
rt_hw_clz:
clz r0, r0
bx lr
#ifdef RT_USING_SMP
.global rt_secondary_cpu_entry
rt_secondary_cpu_entry:
#ifdef RT_USING_SMART
ldr r5, =PV_OFFSET
ldr r0, =_reset
adr r5, _reset
sub r5, r5, r0
ldr lr, =after_enable_mmu_n
ldr r0, =init_mtbl