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scmi: correctly configure MMU for SCMI buffer

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Align the MMU area for SCMI shared buffer on section size;
use the ALIGN macro in mmu_set_region_dcache_behaviour call.

Since commit d877f8fd0f ("arm: provide a function for boards init
code to modify MMU virtual-physical map") the parameter of
mmu_set_region_dcache_behaviour need to be MMU_SECTION_SIZE
aligned.

Fixes: 240720e905 ("firmware: scmi: mailbox/smt agent device")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
This commit is contained in:
Patrick Delaunay 2021-03-16 09:29:40 +01:00 committed by Tom Rini
parent dc514d7ea2
commit 2a3f161c8b
1 changed files with 4 additions and 2 deletions
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6
drivers/firmware/scmi/smt.c
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@ -56,8 +56,10 @@ int scmi_dt_get_smt_buffer(struct udevice *dev, struct scmi_smt *smt)
#ifdef CONFIG_ARM
if (dcache_status())
mmu_set_region_dcache_behaviour((uintptr_t)smt->buf,
smt->size, DCACHE_OFF);
mmu_set_region_dcache_behaviour(ALIGN_DOWN((uintptr_t)smt->buf, MMU_SECTION_SIZE),
ALIGN(smt->size, MMU_SECTION_SIZE),
DCACHE_OFF);
#endif
return 0;