efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation

[linux-2.6-microblaze.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 408781e..76dd3ba 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1028,6 +1028,12 @@
                        specified address. The serial port must already be
                        setup and configured. Options are not yet supported.
 
+               rda,<addr>
+                       Start an early, polled-mode console on a serial port
+                       of an RDA Micro SoC, such as RDA8810PL, at the
+                       specified address. The serial port must already be
+                       setup and configured. Options are not yet supported.
+
                smh     Use ARM semihosting calls for early console.
 
                s3c2410,<addr>
@@ -1067,9 +1073,15 @@
                        specified address. The serial port must already be
                        setup and configured. Options are not yet supported.
 
+               efifb,[options]
+                       Start an early, unaccelerated console on the EFI
+                       memory mapped framebuffer (if available). On cache
+                       coherent non-x86 systems that use system memory for
+                       the framebuffer, pass the 'ram' option so that it is
+                       mapped with the correct attributes.
+
        earlyprintk=    [X86,SH,ARM,M68k,S390]
                        earlyprintk=vga
-                       earlyprintk=efi
                        earlyprintk=sclp
                        earlyprintk=xen
                        earlyprintk=serial[,ttySn[,baudrate]]
@@ -3092,6 +3104,14 @@
                        timeout < 0: reboot immediately
                        Format: <timeout>
 
+       panic_print=    Bitmask for printing system info when panic happens.
+                       User can chose combination of the following bits:
+                       bit 0: print all tasks info
+                       bit 1: print system memory info
+                       bit 2: print timer info
+                       bit 3: print locks info if CONFIG_LOCKDEP is on
+                       bit 4: print ftrace buffer
+
        panic_on_warn   panic() instead of WARN().  Useful to cause kdump
                        on a WARN().