From 4707a8b1434c92884e1eea57ef67ee14e3f253df Mon Sep 17 00:00:00 2001 From: Rodrigo Arias Mallo Date: Tue, 9 Jul 2024 17:27:07 +0200 Subject: [PATCH] Simplify boot parameters and document options --- lagarto-ox.nix | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/lagarto-ox.nix b/lagarto-ox.nix index 1a1e4e6..bc494f5 100644 --- a/lagarto-ox.nix +++ b/lagarto-ox.nix @@ -260,9 +260,18 @@ # Reduce memory to 3 GiB [0x80000000, 0x140000000) fdt set /memory@80000000 reg <0x0 0x80000000 0x0 0xc0000000> - # Set kernel options - setenv debugargs "debug1 trace_options=sym-addr trace_event=initcall:* tp_printk trace_buf_size=1M" - setenv bootargs "root=/dev/ram0 loglevel=7 debug rw earlycon=sbi boot.trace console=hvc0 \''${debugargs} init=${init}" + # Set kernel bootcmd options. + # NixOS interesting options: + # debug1 enable debug shell in stage 1 + # boot.trace enable set -x in stage 1 + # boot.tracedebug enable set -x in stage 2 + # Ftrace interesting options: + # trace_event=initcall:* trace the init function of drivers + # trace_options=sym-addr display function address + # tp_printk write ftrace events to console + # trace_buf_size=1M set ftrace buffer to 1M + # + setenv bootargs "root=/dev/ram0 loglevel=7 debug rw earlycon=sbi console=hvc0 init=${init}" EOF