2024-09-09 08:52:07 +00:00
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Qualcomm IMEM
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IMEM is fast on-chip memory used for various debug features and dma transactions.
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Required properties
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-compatible: "qcom,msm-imem"
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-reg: start address and size of imem memory
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2024-09-09 08:57:42 +00:00
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If any children nodes exist the following properties are required:
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-#address-cells: should be 1
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-#size-cells: should be 1
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-ranges: A triplet that includes the child address, parent address, &
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length. The child address is assumed to be 0.
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Child nodes:
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------------
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Peripheral Image Loader (pil):
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------------------------------
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Required properties:
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-compatible: "qcom,msm-imem-pil"
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-reg: start address and size of PIL region in imem
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Bootloader Stats:
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-----------------
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Required properties:
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-compatible: "qcom,msm-imem-boot_stats"
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-reg: start address and size of boot_stats region in imem
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Cache error reporting:
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-----------------
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Required properties:
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-compatible: "qcom,msm-imem-cache_erp"
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-reg: start address and size of cache_erp region in imem
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Memory Dump:
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------------
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Required properties:
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-compatible: "qcom,msm-imem-mem_dump_table"
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-reg: start address and size of mem_dump_table region in imem
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Restart Reason:
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---------------
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Required properties:
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-compatible: "qcom,msm-imem-restart_reason
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-reg: start address and size of restart_reason region in imem
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Download Mode Type:
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-------------------
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Required properties:
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-compatible: "qcom,msm-imem-dload-type"
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-reg: start address and size of dload type region in imem
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Download Mode:
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--------------
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Required properties:
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-compatible: "qcom,msm-imem-download_mode"
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-reg: start address and size of download_mode region in imem
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Emergency Download Mode:
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------------------------
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-compatible: "qcom,msm-imem-emergency_download_mode"
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-reg: start address and size of emergency_download_mode region in imem
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2024-09-09 08:52:07 +00:00
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Example:
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qcom,msm-imem {
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compatible = "qcom,msm-imem";
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reg = <0xdeadbeef 0x1000>; /* < start_address size > */
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2024-09-09 08:57:42 +00:00
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ranges = <0x0 0xdeadbeef 0x1000>;
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#address-cells = <1>;
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#size-cells = <1>;
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download_mode@0 {
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compatible = "qcom,msm-imem-download_mode";
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reg = <0x0 8>;
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};
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restart_reason@65c {
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compatible = "qcom,msm-imem-restart_reason";
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reg = <0x65c 4>;
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};
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imem_cache_erp: cache_erp@6a4 {
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compatible = "qcom,msm-imem-cache_erp";
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reg = <0x6a4 4>;
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};
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boot_stats@6b0 {
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compatible = "qcom,msm-imem-boot_stats";
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reg = <0x6b0 32>;
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};
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pil@94c {
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compatible = "qcom,msm-imem-pil";
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reg = <0x94c 200>;
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};
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emergency_download_mode@fe0 {
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compatible = "qcom,msm-imem-emergency_download_mode";
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reg = <0xfe0 12>;
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};
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2024-09-09 08:52:07 +00:00
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};
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