[PATCH v2 1/3] rpi5: initial support

Dmitry Malkin dmitry at bedrocksystems.com
Tue Nov 21 23:54:24 CET 2023


rpi5: add initial memory map for bcm2712

includes:
* 1GB of RAM (from 4GB or 8GB total)
* VPU memory interface
* SOC range (main peripherals)

Signed-off-by: Dmitry Malkin <dmitry at bedrocksystems.com>
---
v2:
      new patch
---
 arch/arm/mach-bcm283x/init.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
index 7265faf6ce..362838e9b9 100644
--- a/arch/arm/mach-bcm283x/init.c
+++ b/arch/arm/mach-bcm283x/init.c
@@ -68,6 +68,33 @@ static struct mm_region
bcm2711_mem_map[MEM_MAP_MAX_ENTRIES] = {
     }
 };

+static struct mm_region bcm2712_mem_map[MEM_MAP_MAX_ENTRIES] = {
+    {
+        .virt = 0x00000000UL,
+        .phys = 0x00000000UL,
+        .size = 0x3f800000UL,
+        .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+             PTE_BLOCK_INNER_SHARE
+    }, {
+        .virt = 0x3f800000UL,
+        .phys = 0x3f800000UL,
+        .size = 0x00800000UL,
+        .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+             PTE_BLOCK_NON_SHARE |
+             PTE_BLOCK_PXN | PTE_BLOCK_UXN
+    }, {
+        .virt = 0x107c000000UL,
+        .phys = 0x107c000000UL,
+        .size = 0x0004000000UL,
+        .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+             PTE_BLOCK_NON_SHARE |
+             PTE_BLOCK_PXN | PTE_BLOCK_UXN
+    }, {
+        /* List terminator */
+        0,
+    }
+};
+
 struct mm_region *mem_map = bcm283x_mem_map;

 /*
@@ -78,6 +105,7 @@ static const struct udevice_id board_ids[] = {
     { .compatible = "brcm,bcm2837", .data = (ulong)&bcm283x_mem_map},
     { .compatible = "brcm,bcm2838", .data = (ulong)&bcm2711_mem_map},
     { .compatible = "brcm,bcm2711", .data = (ulong)&bcm2711_mem_map},
+    { .compatible = "brcm,bcm2712", .data = (ulong)&bcm2712_mem_map},
     { },
 };

-- 
2.40.1


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