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serial: earlycon: Add support for big-endian MMIO accesses

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Support command line parameters of the form:
earlycon=<name>,io|mmio|mmio32|mmio32be,<addr>,<options>

This commit seem to be needed even after commit:
serial: 8250: Add support for big-endian MMIO accesses
c627f2ceb6

Signed-off-by: Noam Camus <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Noam Camus 2015-05-25 06:54:28 +03:00 • committed by Greg Kroah-Hartman
commit 6e63be3fee
3 changed files with 16 additions and 9 deletions
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9
Documentation/kernel-parameters.txt
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@ -959,14 +959,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
uart[8250],io,<addr>[,options]
uart[8250],mmio,<addr>[,options]
uart[8250],mmio32,<addr>[,options]
uart[8250],mmio32be,<addr>[,options]
uart[8250],0x<addr>[,options]
Start an early, polled-mode console on the 8250/16550
UART at the specified I/O port or MMIO address.
MMIO inter-register address stride is either 8-bit
(mmio) or 32-bit (mmio32).
If none of [io|mmio|mmio32], <addr> is assumed to be
equivalent to 'mmio'. 'options' are specified in the
same format described for "console=ttyS<n>"; if
(mmio) or 32-bit (mmio32 or mmio32be).
If none of [io|mmio|mmio32|mmio32be], <addr> is assumed
to be equivalent to 'mmio'. 'options' are specified
in the same format described for "console=ttyS<n>"; if
unspecified, the h/w is not initialized.
pl011,<addr>