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of: earlycon: Move address translation to of_setup_earlycon()

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Cleanup the early DT/earlycon separation; remove the 'addr' parameter
from of_setup_earlycon() and get the uart phys addr directly with a
new wrapper function, of_flat_dt_translate_addr(). Limit
fdt_translate_address() to file scope.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley
2016-01-16 15:23:44 -08:00
committed by Greg Kroah-Hartman
parent 088da2a176
commit c90fe9c039
5 changed files with 22 additions and 13 deletions
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8
drivers/of/fdt.c
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@@ -827,19 +827,13 @@ static int __init early_init_dt_scan_chosen_serial(void)
return -ENODEV;
for (match = __earlycon_table; match < __earlycon_table_end; match++) {
u64 addr;
if (!match->compatible[0])
continue;
if (fdt_node_check_compatible(fdt, offset, match->compatible))
continue;
addr = fdt_translate_address(fdt, offset);
if (addr == OF_BAD_ADDR)
return -ENXIO;
of_setup_earlycon(addr, match, offset, options);
of_setup_earlycon(match, offset, options);
return 0;
}
return -ENODEV;

11
drivers/of/fdt_address.c
View File

@@ -161,7 +161,7 @@ static int __init fdt_translate_one(const void *blob, int parent,
* that can be mapped to a cpu physical address). This is not really specified
* that way, but this is traditionally the way IBM at least do things
*/
u64 __init fdt_translate_address(const void *blob, int node_offset)
static u64 __init fdt_translate_address(const void *blob, int node_offset)
{
int parent, len;
const struct of_bus *bus, *pbus;
@@ -239,3 +239,12 @@ u64 __init fdt_translate_address(const void *blob, int node_offset)
bail:
return result;
}
/**
* of_flat_dt_translate_address - translate DT addr into CPU phys addr
* @node: node in the flat blob
*/
u64 __init of_flat_dt_translate_address(unsigned long node)
{
return fdt_translate_address(initial_boot_params, node);
}