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platform: generic: renesas: rzfive: Configure the PMA region

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On the Renesas RZ/Five SoC by default we want to configure 128MiB of memory
ranging from 0x58000000 as a non-cacheable + bufferable region in the PMA
and populate this region as PMA reserve DT node with shared DMA pool and
no-map flags set so that Linux drivers requesting any DMA'able memory go
through this region.

PMA node passed to the above stack:

        reserved-memory {
            #address-cells = <2>;
            #size-cells = <2>;
            ranges;

            pma_resv0@58000000 {
                compatible = "shared-dma-pool";
                reg = <0x0 0x58000000 0x0 0x08000000>;
                no-map;
                linux,dma-default;
            };
        };

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Lad Prabhakar
2023-02-13 21:51:10 +00:00
committed by Anup Patel
parent c10095132a
commit 2491242282
2 changed files with 22 additions and 0 deletions
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21
platform/generic/renesas/rzfive/rzfive.c
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@@ -4,10 +4,30 @@
*
*/
#include <andes/andes45_pma.h>
#include <platform_override.h>
#include <sbi/sbi_domain.h>
#include <sbi_utils/fdt/fdt_helper.h>
static const struct andes45_pma_region renesas_rzfive_pma_regions[] = {
{
.pa = 0x58000000,
.size = 0x8000000,
.flags = ANDES45_PMACFG_ETYP_NAPOT |
ANDES45_PMACFG_MTYP_MEM_NON_CACHE_BUF,
.dt_populate = true,
.shared_dma = true,
.no_map = true,
.dma_default = true,
},
};
static int renesas_rzfive_final_init(bool cold_boot, const struct fdt_match *match)
{
return andes45_pma_setup_regions(renesas_rzfive_pma_regions,
array_size(renesas_rzfive_pma_regions));
}
int renesas_rzfive_early_init(bool cold_boot, const struct fdt_match *match)
{
/*
@@ -34,4 +54,5 @@ static const struct fdt_match renesas_rzfive_match[] = {
const struct platform_override renesas_rzfive = {
.match_table = renesas_rzfive_match,
.early_init = renesas_rzfive_early_init,
.final_init = renesas_rzfive_final_init,
};