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| author | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-11-08 15:00:32 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2022-11-08 15:53:40 -0500 |
| commit | ef7716cacc1d727747a6b230dde9f42fb46e939c (patch) | |
| tree | 68ae74f3f473be3b9f8b536d91877aad1bed3bcb | |
| parent | f9c307c3f9dfda64355fd2c6d73b002913d6752c (diff) | |
| download | qemu-ef7716cacc1d727747a6b230dde9f42fb46e939c.zip qemu-ef7716cacc1d727747a6b230dde9f42fb46e939c.tar.gz qemu-ef7716cacc1d727747a6b230dde9f42fb46e939c.tar.bz2 | |
Revert "hw/block/pflash_cfi: Error out if dev length isn't power of 2"
Commit 334c388f25 ("pflash_cfi: Error out if device length
isn't a power of two") aimed to finish the effort started by
commit 06f1521795 ("pflash: Require backend size to match device,
improve errors"), but unfortunately we are not quite there since
various machines are still ready to accept incomplete / oversized
pflash backend images, and now fail, i.e. on Debian bullseye:
$ qemu-system-x86_64 \
-drive \
if=pflash,format=raw,unit=0,readonly=on,file=/usr/share/OVMF/OVMF_CODE.fd
qemu-system-x86_64: Device size must be a power of two.
where OVMF_CODE.fd comes from the ovmf package, which doesn't
pad the firmware images to the flash size:
$ ls -lh /usr/share/OVMF/
-rw-r--r-- 1 root root 3.5M Aug 19 2021 OVMF_CODE_4M.fd
-rw-r--r-- 1 root root 1.9M Aug 19 2021 OVMF_CODE.fd
-rw-r--r-- 1 root root 128K Aug 19 2021 OVMF_VARS.fd
Since we entered the freeze period to prepare the v7.2.0 release,
the safest is to revert commit 334c388f25707a234c4a0dea05b9df08d.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1294
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221108175755.95141-1-philmd@linaro.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20221108172633.860700-1-danielhb413@gmail.com>
| -rw-r--r-- | hw/block/pflash_cfi01.c | 8 | ||||
| -rw-r--r-- | hw/block/pflash_cfi02.c | 5 |
2 files changed, 2 insertions, 11 deletions
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index 9c235bf..0cbc2fb 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -690,7 +690,7 @@ static const MemoryRegionOps pflash_cfi01_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; -static void pflash_cfi01_fill_cfi_table(PFlashCFI01 *pfl, Error **errp) +static void pflash_cfi01_fill_cfi_table(PFlashCFI01 *pfl) { uint64_t blocks_per_device, sector_len_per_device, device_len; int num_devices; @@ -708,10 +708,6 @@ static void pflash_cfi01_fill_cfi_table(PFlashCFI01 *pfl, Error **errp) sector_len_per_device = pfl->sector_len / num_devices; } device_len = sector_len_per_device * blocks_per_device; - if (!is_power_of_2(device_len)) { - error_setg(errp, "Device size must be a power of two."); - return; - } /* Hardcoded CFI table */ /* Standard "QRY" string */ @@ -869,7 +865,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp) */ pfl->cmd = 0x00; pfl->status = 0x80; /* WSM ready */ - pflash_cfi01_fill_cfi_table(pfl, errp); + pflash_cfi01_fill_cfi_table(pfl); } static void pflash_cfi01_system_reset(DeviceState *dev) diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index ff2fe15..2a99b28 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -880,11 +880,6 @@ static void pflash_cfi02_realize(DeviceState *dev, Error **errp) return; } - if (!is_power_of_2(pfl->chip_len)) { - error_setg(errp, "Device size must be a power of two."); - return; - } - memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl), &pflash_cfi02_ops, pfl, pfl->name, pfl->chip_len, errp); |