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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 16:57:22 +00:00
parent 4f9ffa42b0
commit 358018a688
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=260374
1 changed files with 10 additions and 22 deletions
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32
sys/arm/allwinner/a10_machdep.c
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@ -50,21 +50,16 @@ __FBSDID("$FreeBSD$");
#include <arm/allwinner/a10_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
initarm_early_init(void)
{
}
void
@ -77,28 +72,21 @@ initarm_late_init(void)
{
}
#define FDT_DEVMAP_MAX (1 + 2 + 1 + 1)
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.
*
* This covers all the on-chip device with 1MB section mappings, which is good
* for performance (uses fewer TLB entries for device access).
*
* XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
* shouldn't be device-mapped. The original code mapped a 4MB block, but
* perhaps a 1MB block would be more appropriate.
*/
int
initarm_devmap_init(void)
{
int i = 0;
fdt_devmap[i].pd_va = 0xE1C00000;
fdt_devmap[i].pd_pa = 0x01C00000;
fdt_devmap[i].pd_size = 0x00400000; /* 4 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(0x01C00000, 0x00400000); /* 4MB */
return (0);
}