BFE EngineeringandClaude Opus 4.8
7e76553bd7
MAILBOX (fully open A7<->RISC-V SCR1 round-trip, 5/5 exact echoes on c8a3):
- rockchip-mailbox.c: rv1106 has 1 shared IRQ, not 4/channel -> added
rv1106_drv_data{num_chans=1} + compatible (rk3368 fallback assumed 4 -> probe
failed 'IRQ index 1 not found').
- clk-rv1106.c: CLK_CORE_MCU (SCR1 core clock) marked CLK_IGNORE_UNUSED -
6.18's clk_disable_unused() was switching off the coprocessor clock so a
loaded firmware never ran (5.10 left it on).
- Open SCR1 echo firmware (scr1-echo/, 154B RV32IMC) + load/test scripts;
A2B_INTEN on the MCU side + CMD-then-DAT (DAT=doorbell) order. Loaded via the
proven hpmcu.rs SRAM path; do NOT kill warden-flared (dw-wdt). mailbox/VERIFIED.md.
NPU (open GPL rknpu 0.9.2 kernel driver on 6.18):
- DT fix: base npu node lacks interrupt-names, driver requests IRQ byname
'npu_irq' -> probe bailed -ENXIO. Added interrupt-names='npu_irq'.
- Verified: [drm] Initialized rknpu 0.9.2 on minor 1; /dev/dri/card1;
rknpu_version_test PASS (0.9.2 + hw version, full power/clock/reset path).
- Honest ceiling: open compute (regcmd compiler) is a from-scratch ~person-year
RE project, no RV1106 prior art; ship the driver, no blob. npu/VERIFIED.md.
DRIVER-PARITY + CAPABILITIES-AUDIT updated; dts snapshot refreshed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017wB8KB3MMQztRDXCMCkPrf
44 lines
1.1 KiB
Plaintext
44 lines
1.1 KiB
Plaintext
/*
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* HPMCU watchdog supervisor — linked into the hpmcu_sram carve-out.
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*
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* The RV1106's 256K on-chip SRAM at 0xFF6C0000 is split by the kernel DT
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* (rv1106.dtsi sram@ff6c0000) into rkisp_sram (0x0..0x3e000) and hpmcu_sram
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* (0x3e000..0x40000, i.e. 0xFF6FE000..0xFF700000). We live entirely inside
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* the 8K hpmcu region:
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*
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* 0xFF6FE000 +0x0000 .text/.rodata/.data/.bss (this script: 0x1C00)
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* 0xFF6FFC00 +0x1C00 stack (grows down from 0xFF6FFF00)
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* 0xFF6FFF00 +0x1F00 heartbeat mailbox (shared with Linux, see main.c)
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*/
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OUTPUT_ARCH(riscv)
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ENTRY(_start)
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MEMORY
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{
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SRAM (rwx) : ORIGIN = 0xFF6FE000, LENGTH = 0x1C00
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}
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SECTIONS
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{
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.text : {
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*(.text.start)
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*(.text*)
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} > SRAM
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.rodata : { *(.rodata*) *(.srodata*) } > SRAM
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.data : { *(.data*) *(.sdata*) } > SRAM
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.bss (NOLOAD) : {
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. = ALIGN(4);
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__bss_start = .;
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*(.bss*) *(.sbss*) *(COMMON)
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. = ALIGN(4);
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__bss_end = .;
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} > SRAM
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/* Stack: from the mailbox floor down toward .bss. */
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__stack_top = 0xFF6FFF00;
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/DISCARD/ : { *(.eh_frame) *(.riscv.attributes) *(.comment) }
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}
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