Two carveout reserved memory nodes each have been added for each of the
R5F remote processor devices within the MAIN domain on the TI AM642 EVM
and SK boards. These nodes are assigned to the respective rproc device
nodes as well. The first region will be used as the DMA pool for the rproc
devices, and the second region will furnish the static carveout regions
for the firmware memory.
An additional reserved memory node is also added to reserve a portion of
the DDR memory to be used for performing inter-processor communication
between all the remote processors running RTOS or baremetal firmwares.
8 MB of memory is reserved for this purpose, and this accounts for all
the vrings and vring buffers between all the possible pairs of remote
processors.
The current carveout addresses and sizes are defined statically for each
rproc device. The R5F processors do not have an MMU, and as such require
the exact memory used by the firmwares to be set-aside. The firmware
images do not require any RSC_CARVEOUT entries in their resource tables
to allocate the memory for firmware memory segments.
NOTE:
1. The R5F1 carveouts are needed only if the R5F cluster is running in
Split (non Single-CPU) mode. The reserved memory nodes can be disabled
later on if there is no use-case defined to use the corresponding
remote processor.
2. The AM64x SoCs do not have any DSPs and one less R5F cluster compared
to J721E SoCs. So, while the carveout memories reserved for the R5F
clusters present on the SoC match to those on J721E, the overall
memory map reserved for firmwares is quite different. The number of
R5F clusters on AM64x SoCs are same as on J7200 SoCs, but the AM64x
SoCs also have an additional M4F core, so the RTOS IPC memory region
is 1 MB higher than on J7200 SoCs.
Signed-off-by: Suman Anna <s-anna@xxxxxx>
---
arch/arm64/boot/dts/ti/k3-am642-evm.dts | 62 +++++++++++++++++++++++++
arch/arm64/boot/dts/ti/k3-am642-sk.dts | 62 +++++++++++++++++++++++++
2 files changed, 124 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index c542a648231f..4d0b3f86525e 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -36,6 +36,60 @@ secure_ddr: optee@9e800000 {
alignment = <0x1000>;
no-map;
};
+
+ main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa0000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss0_core0_memory_region: r5f-memory@a0100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa0100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss0_core1_dma_memory_region: r5f-dma-memory@a1000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa1000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss0_core1_memory_region: r5f-memory@a1100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa1100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss1_core0_dma_memory_region: r5f-dma-memory@a2000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa2000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss1_core0_memory_region: r5f-memory@a2100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa2100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss1_core1_dma_memory_region: r5f-dma-memory@a3000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa3000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss1_core1_memory_region: r5f-memory@a3100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa3100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ rtos_ipc_memory_region: ipc-memories@a5000000 {
+ reg = <0x00 0xa5000000 0x00 0x00800000>;
+ alignment = <0x1000>;
+ no-map;
+ };
};
evm_12v0: fixedregulator-evm12v0 {
@@ -132,18 +186,26 @@ cpsw3g_phy3: ethernet-phy@3 {
&main_r5fss0_core0 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
+ memory-region = <&main_r5fss0_core0_dma_memory_region>,
+ <&main_r5fss0_core0_memory_region>;
};
&main_r5fss0_core1 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
+ memory-region = <&main_r5fss0_core1_dma_memory_region>,
+ <&main_r5fss0_core1_memory_region>;
};
&main_r5fss1_core0 {
mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
+ memory-region = <&main_r5fss1_core0_dma_memory_region>,
+ <&main_r5fss1_core0_memory_region>;
};
&main_r5fss1_core1 {
mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
+ memory-region = <&main_r5fss1_core1_dma_memory_region>,
+ <&main_r5fss1_core1_memory_region>;
};
&main_pmx0 {
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 1540a4c39b86..5891e6a05ddf 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -35,6 +35,60 @@ secure_ddr: optee@9e800000 {
alignment = <0x1000>;
no-map;
};
+
+ main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa0000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss0_core0_memory_region: r5f-memory@a0100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa0100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss0_core1_dma_memory_region: r5f-dma-memory@a1000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa1000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss0_core1_memory_region: r5f-memory@a1100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa1100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss1_core0_dma_memory_region: r5f-dma-memory@a2000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa2000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss1_core0_memory_region: r5f-memory@a2100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa2100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ main_r5fss1_core1_dma_memory_region: r5f-dma-memory@a3000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa3000000 0x00 0x100000>;
+ no-map;
+ };
+
+ main_r5fss1_core1_memory_region: r5f-memory@a3100000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0xa3100000 0x00 0xf00000>;
+ no-map;
+ };
+
+ rtos_ipc_memory_region: ipc-memories@a5000000 {
+ reg = <0x00 0xa5000000 0x00 0x00800000>;
+ alignment = <0x1000>;
+ no-map;
+ };
};
vusb_main: fixed-regulator-vusb-main5v0 {
@@ -335,16 +389,24 @@ &mailbox0_cluster7 {
&main_r5fss0_core0 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
+ memory-region = <&main_r5fss0_core0_dma_memory_region>,
+ <&main_r5fss0_core0_memory_region>;
};
&main_r5fss0_core1 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
+ memory-region = <&main_r5fss0_core1_dma_memory_region>,
+ <&main_r5fss0_core1_memory_region>;
};
&main_r5fss1_core0 {
mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
+ memory-region = <&main_r5fss1_core0_dma_memory_region>,
+ <&main_r5fss1_core0_memory_region>;
};
&main_r5fss1_core1 {
mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
+ memory-region = <&main_r5fss1_core1_dma_memory_region>,
+ <&main_r5fss1_core1_memory_region>;
};
--
2.30.1
