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Switch to using arm_devmap_add_entry() to set up static device mapping.

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This eliminates the hard-coded max kva and roughly doubles the available
kva space.
This commit is contained in:
Ian Lepore 2014-01-06 15:48:16 +00:00
parent f66aed321e
commit fdadb971af
1 changed files with 5 additions and 20 deletions
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25
sys/arm/broadcom/bcm2835/bcm2835_machdep.c
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@ -59,14 +59,11 @@ __FBSDID("$FreeBSD$");
#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
/* Start of address space used for bootstrap map */
#define DEVMAP_BOOTSTRAP_MAP_START 0xE0000000
vm_offset_t
initarm_lastaddr(void)
{
return (DEVMAP_BOOTSTRAP_MAP_START);
return (arm_devmap_lastaddr());
}
void
@ -99,28 +96,16 @@ initarm_late_init(void)
}
}
#define FDT_DEVMAP_MAX (2) // FIXME
static struct arm_devmap_entry fdt_devmap[FDT_DEVMAP_MAX] = {
{ 0, 0, 0, 0, 0, }
};
/*
* Construct pmap_devmap[] with DT-derived config data.
* Set up static device mappings.
* All on-chip peripherals exist in a 16MB range starting at 0x20000000.
* Map the entire range using 1MB section mappings.
*/
int
initarm_devmap_init(void)
{
int i = 0;
fdt_devmap[i].pd_va = 0xf2000000;
fdt_devmap[i].pd_pa = 0x20000000;
fdt_devmap[i].pd_size = 0x01000000; /* 1 MB */
fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
fdt_devmap[i].pd_cache = PTE_DEVICE;
i++;
arm_devmap_register_table(&fdt_devmap[0]);
arm_devmap_add_entry(0x20000000, 0x01000000);
return (0);
}