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aspeed/scu: Fix valid access size on AST2400 

The read access size of the SCU registers can be 1/2/4 bytes and write
is 4 bytes and all Aspeed models would need a .valid.accepts() handler.

For the moment, set the min access size to 1 byte to cover both read
and write operations on the AST2400 but keep the min access size of
the other SoCs to 4 bytes as this is an unusual access size.

This fixes support for some old firmware doing 2 bytes reads on the
AST2400 SoC.

Reported-by: Erik Smit <erik.lucas.smit@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Message-Id: <20200819100956.2216690-5-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Cédric Le Goater 2020-09-01 14:21:50 +02:00
parent 31fc566f5e
commit 740bc3a7e6
1 changed files with 4 additions and 3 deletions
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7
hw/misc/aspeed_scu.c
View File

@ -328,9 +328,10 @@ static const MemoryRegionOps aspeed_ast2400_scu_ops = {
.read = aspeed_scu_read,
.write = aspeed_ast2400_scu_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.valid.unaligned = false,
.valid = {
.min_access_size = 1,
.max_access_size = 4,
},
};
static const MemoryRegionOps aspeed_ast2500_scu_ops = {