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Pass the kernel physical address to initarm through the boot param struct.

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This commit is contained in:
Andrew Turner 2014-02-06 20:17:58 +00:00
parent f7a74e061b
commit 313857e9b7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=261562
2 changed files with 4 additions and 1 deletions
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4
sys/arm/arm/locore.S
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@ -216,7 +216,7 @@ mmu_done:
ldr pc, .Lvirt_done
virt_done:
mov r1, #20 /* loader info size is 20 bytes also second arg */
mov r1, #24 /* loader info size is 24 bytes also second arg */
subs sp, sp, r1 /* allocate arm_boot_params struct on stack */
bic sp, sp, #7 /* align stack to 8 bytes */
mov r0, sp /* loader info pointer is first arg */
@ -225,6 +225,8 @@ virt_done:
str r8, [r0, #8] /* Store r1 from boot loader */
str ip, [r0, #12] /* store r2 from boot loader */
str fp, [r0, #16] /* store r3 from boot loader */
ldr r5, =KERNPHYSADDR /* load KERNPHYSADDR as the physical address */
str r5, [r0, #20] /* store the physical address */
mov fp, #0 /* trace back starts here */
bl _C_LABEL(initarm) /* Off we go */

1
sys/arm/include/cpu.h
View File

@ -41,6 +41,7 @@ struct arm_boot_params {
register_t abp_r1; /* r1 from the boot loader */
register_t abp_r2; /* r2 from the boot loader */
register_t abp_r3; /* r3 from the boot loader */
vm_offset_t abp_physaddr; /* The kernel physical address */
};
void arm_vector_init(vm_offset_t, int);