turn off pcie_aspm

Author: pastudan

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pibox-host",
-  "version": "1.48.0",
+  "version": "1.49.0",
   "private": true,
   "bin": "server.js",
   "scripts": {

public/favicon.png

@@ -29,6 +29,7 @@ const handle = app.getRequestHandler()
 async function start() {
   console.log('Starting PiBox Host')
   await startFramebuffer()
+  await checkBootFirmwareCmdline()
   await getVersion()
   app.prepare().then(async () => {
     createServer((req, res) => {
@@ -92,9 +93,10 @@ async function getOrCreateKeys() {
 }
 
 async function startFramebuffer() {
+  const path = '/boot/firmware/config.txt'
   try {
     // Check that SPI is enabled
-    let bootConfigLines = (await readFile('/boot/config.txt', 'utf8')).split('\n')
+    let bootConfigLines = (await readFile(path, 'utf8')).split('\n')
     let requiresReboot = false
     bootConfigLines = bootConfigLines.map((line) => {
       if (line === 'dtparam=spi=off' || line === '#dtparam=spi=on' || line === '#dtparam=spi=off') {
@@ -106,7 +108,8 @@ async function startFramebuffer() {
     })
     if (requiresReboot) {
       console.log('Enabling SPI, rebooting...')
-      await writeFile('/boot/config.txt', bootConfigLines.join('\n'))
+      await writeFile(path, bootConfigLines.join('\n'))
+      await execAsync('sync')
       await execAsync('reboot now')
       process.exit()
     }
@@ -119,6 +122,23 @@ async function startFramebuffer() {
   }
 }
 
+async function checkBootFirmwareCmdline() {
+  let cmdlineOpts = (await readFile('/boot/firmware/cmdline.txt', 'utf8')).split(' ')
+  const includesPcieAspm = cmdlineOpts.find((opt) => opt.startsWith('pcie_aspm='))
+  if (includesPcieAspm) {
+    console.log('✓ PCIe ASPM mode set:', includesPcieAspm)
+  } else {
+    // insert pcie_aspm=off before rootwait
+    const rootwaitIndex = cmdlineOpts.indexOf('rootwait')
+    cmdlineOpts.splice(rootwaitIndex, 0, 'pcie_aspm=off')
+    console.log('Disabling PCIe ASPM mode, rebooting...')
+    await writeFile('/boot/firmware/cmdline.txt', cmdlineOpts.join(' '))
+    await execAsync('sync')
+    await execAsync('reboot now')
+    process.exit()
+  }
+}
+
 async function getVersion() {
   try {
     const pkgPath = process.cwd() + '/package.json'