[PATCH] platform: generic: metanoia/mt2824: configure PMA for DSP memory regions

[Benoît Monin]

Set up the memory attribute for the XOR RAM, MRAS memory, and RSC table
used by the DSPs as non-cacheable and bufferable during final init.

Signed-off-by: Benoît Monin <benoit.monin at bootlin.com>
---
 platform/generic/metanoia/mt2824/mt2824.c | 47 +++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/platform/generic/metanoia/mt2824/mt2824.c b/platform/generic/metanoia/mt2824/mt2824.c
index a34304b9..970e15e7 100644
--- a/platform/generic/metanoia/mt2824/mt2824.c
+++ b/platform/generic/metanoia/mt2824/mt2824.c
@@ -6,13 +6,60 @@
  *      Jun Chang <jun.chang at metanoia-comm.com>
  */
 
+#include <andes/andes_pma.h>
 #include <andes/andes_pmu.h>
 #include <andes/andes_sbi.h>
 #include <platform_override.h>
+#include <sbi_utils/fdt/fdt_helper.h>
+
+#define MT2824_XOR_RAM_BASE		0x00100000ULL
+#define MT2824_XOR_RAM_SIZE		0x00040000ULL
+
+#define MT2824_MRAS_MEM_BASE		0x60000000ULL
+#define MT2824_MRAS_MEM_SIZE		0x20000000ULL
+
+#define MT2824_RSCTABLE_BASE		0x81000000ULL
+#define MT2824_RSCTABLE_SIZE		0x00010000ULL
+
+static const struct andes_pma_region metanoia_mt2824_pma_regions[] = {
+	{
+		.pa = MT2824_XOR_RAM_BASE,
+		.size = MT2824_XOR_RAM_SIZE,
+		.flags = ANDES_PMACFG_ETYP_NAPOT |
+			 ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF,
+	},
+	{
+		.pa = MT2824_MRAS_MEM_BASE,
+		.size = MT2824_MRAS_MEM_SIZE,
+		.flags = ANDES_PMACFG_ETYP_NAPOT |
+			 ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF,
+	},
+        {
+		.pa = MT2824_RSCTABLE_BASE,
+		.size = MT2824_RSCTABLE_SIZE,
+		.flags = ANDES_PMACFG_ETYP_NAPOT |
+			 ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF,
+        },
+};
+
+static int metanoia_mt2824_final_init(bool cold_boot)
+{
+	void *fdt = fdt_get_address_rw();
+	int rc;
+
+	/* Set the DSP memory regions attributes */
+	rc = andes_pma_setup_regions(fdt, metanoia_mt2824_pma_regions,
+				     array_size(metanoia_mt2824_pma_regions));
+	if (rc)
+		return rc;
+
+	return generic_final_init(cold_boot);
+}
 
 static int metanoia_mt2824_platform_init(const void *fdt, int nodeoff,
 					const struct fdt_match *match)
 {
+	generic_platform_ops.final_init = metanoia_mt2824_final_init;
 	generic_platform_ops.extensions_init = andes_pmu_extensions_init;
 	generic_platform_ops.pmu_init = andes_pmu_init;
 	generic_platform_ops.vendor_ext_provider = andes_sbi_vendor_ext_provider;

---
base-commit: 35511bc6ee1c9c17b6a89b44c52e2044bb51b979
change-id: 20260902-mt2824-pma-f09c4965c4e9

Best regards,
--  
Benoît Monin, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com