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lib: utils: Disable appropriate APLIC DT nodes in fdt_fixups() 

We should disable APLIC DT nodes in fdt_fixups() which are not
accessible to the next booting stage based on currently assigned
domain.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel 2021-06-15 11:37:59 +05:30 committed by Anup Patel
parent 34612193af
commit 8e2ef4f7af
2 changed files with 26 additions and 3 deletions
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18
include/sbi_utils/fdt/fdt_fixup.h
View File

@ -21,6 +21,18 @@
*/
void fdt_cpu_fixup(void *fdt);
/**
* Fix up the APLIC nodes in the device tree
*
* This routine disables APLIC nodes which are not accessible to the next
* booting stage based on currently assigned domain.
*
* It is recommended that platform codes call this helper in their final_init()
*
* @param fdt: device tree blob
*/
void fdt_aplic_fixup(void *fdt);
/**
* Fix up the IMSIC nodes in the device tree
*
@ -76,9 +88,9 @@ int fdt_reserved_memory_nomap_fixup(void *fdt);
* General device tree fix-up
*
* This routine do all required device tree fix-ups for a typical platform.
* It fixes up the PLIC node, IMSIC nodes, and the reserved memory node in
* the device tree by calling the corresponding helper routines to accomplish
* the task.
* It fixes up the PLIC node, IMSIC nodes, APLIC nodes, and the reserved
* memory node in the device tree by calling the corresponding helper
* routines to accomplish the task.
*
* It is recommended that platform codes call this helper in their final_init()
*

11
lib/utils/fdt/fdt_fixup.c
View File

@ -71,6 +71,15 @@ static void fdt_domain_based_fixup_one(void *fdt, int nodeoff)
}
}
void fdt_aplic_fixup(void *fdt)
{
int noff = 0;
while ((noff = fdt_node_offset_by_compatible(fdt, noff,
"riscv,aplic")) >= 0)
fdt_domain_based_fixup_one(fdt, noff);
}
void fdt_imsic_fixup(void *fdt)
{
int noff = 0;
@ -289,6 +298,8 @@ int fdt_reserved_memory_nomap_fixup(void *fdt)
void fdt_fixups(void *fdt)
{
fdt_aplic_fixup(fdt);
fdt_imsic_fixup(fdt);
fdt_plic_fixup(fdt);