105bef466a
Sanitized research log, build/reproducibility docs, DTS, kernel configs, patches, initramfs sources, bootchain migration plans and test logs. B5 direct boot PASS; B6 modem lifecycle in progress. No dumps, NV/EFS, vendor firmware or device identifiers included.
51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
--- dts/msm8916-jz08-aurora-usb1.dts 2026-09-30 03:41:35.657318004 +0600
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+++ dts/msm8916-jz08-aurora-emmc1.dts 2026-09-30 03:49:29.083717184 +0600
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@@ -1,7 +1,7 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Project Aurora — JZ08AU-XPA-7J-R3 (MSM8916, 512 MB, ST7735S SPI panel).
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- * RAM-BOOT USB1: kernel + UART console + USB peripheral (NCM gadget). Everything that could touch
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+ * RAM-BOOT EMMC1: USB1 + internal eMMC (sdhc_1) for READ-ONLY verification. Everything that could touch
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* storage, radios or power management is explicitly disabled.
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*
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* Hardware facts from stock Aurora dtb_01 (see NOTES.md S2.1/S12):
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@@ -14,12 +14,13 @@
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#include "msm8916-pm8916.dtsi" /* + RPM regulators (USB PHY L7/L13) */
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/ {
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- model = "JZ08AU Aurora (RAM boot USB1)";
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+ model = "JZ08AU Aurora (RAM boot EMMC1)";
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compatible = "jz08au,aurora", "qcom,msm8916";
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chassis-type = "embedded";
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aliases {
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serial0 = &blsp_uart2;
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+ mmc0 = &sdhc_1; /* eMMC */
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};
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chosen {
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@@ -34,8 +35,8 @@
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status = "okay";
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};
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-/* --- RAM boot USB1 safety: no storage, no radios --- */
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-&sdhc_1 { status = "disabled"; }; /* eMMC: must stay untouched */
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+/* --- RAM boot EMMC1 safety: no SD slot, no radios --- */
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+/* sdhc_1 (eMMC): enabled below, READ-ONLY enforced by initramfs (blockdev --setro) */
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&sdhc_2 { status = "disabled"; };
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/* usb: see peripheral block below */
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&mpss { status = "disabled"; };
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@@ -61,3 +62,13 @@
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&usb_hs_phy {
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extcon = <&pm8916_usbin>;
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};
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+
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+/*
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+ * Internal eMMC (stock: bootdevice=7824900.sdhci, qcom,bus-width 8, nonremovable,
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+ * vdd = 8916_l8 2.85-2.9 V, vdd-io = 8916_l5 1.8 V). Upstream msm8916.dtsi already provides
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+ * bus-width = <8>, non-removable, mmc-ddr-1_8v (no HS200 = conservative), sdc1 pinctrl;
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+ * msm8916-pm8916.dtsi provides vmmc = pm8916_l8, vqmmc = pm8916_l5. Only enable it here.
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+ */
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+&sdhc_1 {
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+ status = "okay";
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+};
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