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powerpc/powernv: Add interfaces for flash device access

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This change adds the OPAL interface definitions to allow Linux to read,
write and erase from system flash devices. We register platform devices
for the flash devices exported by firmware.

We clash with the existing opal_flash_init function, which is really for
the FSP flash update functionality, so we rename that initcall to
opal_flash_update_init().

A future change will add an mtd driver that uses this interface.

Changes from Joel Stanley and Jeremy Kerr.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Acked-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Cyril Bur
2015-04-01 14:05:30 +08:00
committed by Michael Ellerman
parent d1d915783d
commit ed59190e41
5 changed files with 31 additions and 4 deletions
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2
arch/powerpc/platforms/powernv/opal-flash.c
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@@ -546,7 +546,7 @@ static struct attribute_group image_op_attr_group = {
.attrs = image_op_attrs,
};
void __init opal_flash_init(void)
void __init opal_flash_update_init(void)
{
int ret;