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Add support for mapping a small range of the SoC devices for debugging

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purposes early in boot.
This commit is contained in:
Warner Losh 2014-01-22 21:23:58 +00:00
parent 26fbe13c56
commit 88b842d215
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=261039
2 changed files with 7 additions and 1 deletions
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6
sys/arm/arm/locore.S
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@ -258,9 +258,13 @@ mmu_init_table:
/* fill all table VA==PA */
/* map SDRAM VA==PA, WT cacheable */
#if !defined(SMP)
MMU_INIT(PHYSADDR, PHYSADDR , 64, L1_TYPE_S|L1_S_C|L1_S_AP(AP_KRW))
MMU_INIT(PHYSADDR, PHYSADDR, 64, L1_TYPE_S|L1_S_C|L1_S_AP(AP_KRW))
/* map VA 0xc0000000..0xc3ffffff to PA */
MMU_INIT(KERNBASE, PHYSADDR, 64, L1_TYPE_S|L1_S_C|L1_S_AP(AP_KRW))
#if defined(SOCDEV_PA) && defined(SOCKDEV_VA)
/* Map in 0x04000000 worth of the SoC's devices for bootstrap debugging */
MMU_INIT(SOCKDEV_VA, SOCDEV_PA, 64, L1_TYPE_S|L1_S_C|L1_S_AP(AP_KRW))
#endif
#else
MMU_INIT(PHYSADDR, PHYSADDR , 64, L1_TYPE_S|L1_SHARED|L1_S_C|L1_S_AP(AP_KRW))
/* map VA 0xc0000000..0xc3ffffff to PA */

2
sys/conf/options.arm
View File

@ -35,6 +35,8 @@ LINUX_BOOT_ABI opt_global.h
LOADERRAMADDR opt_global.h
NO_EVENTTIMERS opt_timer.h
PHYSADDR opt_global.h
SOCDEV_PA opt_global.h
SOCDEV_VA opt_global.h
PV_STATS opt_pmap.h
QEMU_WORKAROUNDS opt_global.h
SOC_MV_ARMADAXP opt_global.h