* [PATCH v2 1/3] hw/intc/aspeed: Set impl.min_access_size to 4
2025-05-22 2:33 [PATCH v2 0/3] Fix RAM size detection failure on BE hosts Jamin Lin via
@ 2025-05-22 2:33 ` Jamin Lin via
2025-05-22 2:33 ` [PATCH v2 2/3] hw/intc/aspeed Fix coding style Jamin Lin via
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Jamin Lin via @ 2025-05-22 2:33 UTC (permalink / raw)
To: Cédric Le Goater, Peter Maydell, Steven Lee, Troy Lee,
Andrew Jeffery, Joel Stanley, open list:ASPEED BMCs,
open list:All patches CC here
Cc: jamin_lin, troy_lee, Cédric Le Goater
This patch explicitly sets ".impl.min_access_size = 4" to match the
declared ".valid.min_access_size = 4", enforcing stricter access size
checking and preventing inconsistent partial accesses to the interrupt
controller registers.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
---
hw/intc/aspeed_intc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/hw/intc/aspeed_intc.c b/hw/intc/aspeed_intc.c
index 33fcbe729c..19f88853d8 100644
--- a/hw/intc/aspeed_intc.c
+++ b/hw/intc/aspeed_intc.c
@@ -737,6 +737,7 @@ static const MemoryRegionOps aspeed_intc_ops = {
.read = aspeed_intc_read,
.write = aspeed_intc_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -747,6 +748,7 @@ static const MemoryRegionOps aspeed_intcio_ops = {
.read = aspeed_intcio_read,
.write = aspeed_intcio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -757,6 +759,7 @@ static const MemoryRegionOps aspeed_ssp_intc_ops = {
.read = aspeed_intc_read,
.write = aspeed_ssp_intc_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -767,6 +770,7 @@ static const MemoryRegionOps aspeed_ssp_intcio_ops = {
.read = aspeed_intcio_read,
.write = aspeed_ssp_intcio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -777,6 +781,7 @@ static const MemoryRegionOps aspeed_tsp_intc_ops = {
.read = aspeed_intc_read,
.write = aspeed_tsp_intc_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
@@ -787,6 +792,7 @@ static const MemoryRegionOps aspeed_tsp_intcio_ops = {
.read = aspeed_intcio_read,
.write = aspeed_tsp_intcio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
--
2.43.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v2 2/3] hw/intc/aspeed Fix coding style
2025-05-22 2:33 [PATCH v2 0/3] Fix RAM size detection failure on BE hosts Jamin Lin via
2025-05-22 2:33 ` [PATCH v2 1/3] hw/intc/aspeed: Set impl.min_access_size to 4 Jamin Lin via
@ 2025-05-22 2:33 ` Jamin Lin via
2025-05-22 2:33 ` [PATCH v2 3/3] hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts Jamin Lin via
2025-05-23 8:11 ` [PATCH v2 0/3] " Cédric Le Goater
3 siblings, 0 replies; 6+ messages in thread
From: Jamin Lin via @ 2025-05-22 2:33 UTC (permalink / raw)
To: Cédric Le Goater, Peter Maydell, Steven Lee, Troy Lee,
Andrew Jeffery, Joel Stanley, open list:ASPEED BMCs,
open list:All patches CC here
Cc: jamin_lin, troy_lee, Cédric Le Goater
Fix coding style issues from checkpatch.pl.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
---
hw/intc/aspeed_intc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/hw/intc/aspeed_intc.c b/hw/intc/aspeed_intc.c
index 19f88853d8..5cd786dee6 100644
--- a/hw/intc/aspeed_intc.c
+++ b/hw/intc/aspeed_intc.c
@@ -1001,7 +1001,8 @@ static AspeedINTCIRQ aspeed_2700ssp_intcio_irqs[ASPEED_INTC_MAX_INPINS] = {
{5, 5, 1, R_SSPINT165_EN, R_SSPINT165_STATUS},
};
-static void aspeed_2700ssp_intcio_class_init(ObjectClass *klass, const void *data)
+static void aspeed_2700ssp_intcio_class_init(ObjectClass *klass,
+ const void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AspeedINTCClass *aic = ASPEED_INTC_CLASS(klass);
@@ -1069,7 +1070,8 @@ static AspeedINTCIRQ aspeed_2700tsp_intcio_irqs[ASPEED_INTC_MAX_INPINS] = {
{5, 5, 1, R_TSPINT165_EN, R_TSPINT165_STATUS},
};
-static void aspeed_2700tsp_intcio_class_init(ObjectClass *klass, const void *data)
+static void aspeed_2700tsp_intcio_class_init(ObjectClass *klass,
+ const void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AspeedINTCClass *aic = ASPEED_INTC_CLASS(klass);
--
2.43.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v2 3/3] hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts
2025-05-22 2:33 [PATCH v2 0/3] Fix RAM size detection failure on BE hosts Jamin Lin via
2025-05-22 2:33 ` [PATCH v2 1/3] hw/intc/aspeed: Set impl.min_access_size to 4 Jamin Lin via
2025-05-22 2:33 ` [PATCH v2 2/3] hw/intc/aspeed Fix coding style Jamin Lin via
@ 2025-05-22 2:33 ` Jamin Lin via
2025-05-22 7:37 ` Cédric Le Goater
2025-05-23 8:11 ` [PATCH v2 0/3] " Cédric Le Goater
3 siblings, 1 reply; 6+ messages in thread
From: Jamin Lin via @ 2025-05-22 2:33 UTC (permalink / raw)
To: Cédric Le Goater, Peter Maydell, Steven Lee, Troy Lee,
Andrew Jeffery, Joel Stanley, open list:ASPEED BMCs,
open list:All patches CC here
Cc: jamin_lin, troy_lee
On big-endian hosts, the aspeed_ram_capacity_write() function previously passed
the address of a 64-bit "data" variable directly to address_space_write(),
assuming host and guest endianness matched.
However, the data is expected to be written in little-endian format to DRAM.
On big-endian hosts, this led to incorrect data being written into DRAM,
which caused the guest firmware to misdetect the DRAM size.
As a result, U-Boot fails to boot and hangs.
- Replaces the "address_space_write()" call with "address_space_stl_le()",
which performs an explicit 32-bit little-endian write.
- Updating the MemoryRegionOps to restrict access to exactly 4 bytes
using .valid.{min,max}_access_size = 4 and .impl.min_access_size = 4.
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Fixes: 7436db1 ("aspeed/soc: fix incorrect dram size for AST2700")
---
hw/arm/aspeed_ast27x0.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c
index 1974a25766..82a5ecff04 100644
--- a/hw/arm/aspeed_ast27x0.c
+++ b/hw/arm/aspeed_ast27x0.c
@@ -346,8 +346,9 @@ static void aspeed_ram_capacity_write(void *opaque, hwaddr addr, uint64_t data,
* If writes the data to the address which is beyond the ram size,
* it would write the data to the "address % ram_size".
*/
- result = address_space_write(&s->dram_as, addr % ram_size,
- MEMTXATTRS_UNSPECIFIED, &data, 4);
+ address_space_stl_le(&s->dram_as, addr % ram_size, data,
+ MEMTXATTRS_UNSPECIFIED, &result);
+
if (result != MEMTX_OK) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: DRAM write failed, addr:0x%" HWADDR_PRIx
@@ -360,9 +361,10 @@ static const MemoryRegionOps aspeed_ram_capacity_ops = {
.read = aspeed_ram_capacity_read,
.write = aspeed_ram_capacity_write,
.endianness = DEVICE_LITTLE_ENDIAN,
+ .impl.min_access_size = 4,
.valid = {
- .min_access_size = 1,
- .max_access_size = 8,
+ .min_access_size = 4,
+ .max_access_size = 4,
},
};
--
2.43.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH v2 3/3] hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts
2025-05-22 2:33 ` [PATCH v2 3/3] hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts Jamin Lin via
@ 2025-05-22 7:37 ` Cédric Le Goater
0 siblings, 0 replies; 6+ messages in thread
From: Cédric Le Goater @ 2025-05-22 7:37 UTC (permalink / raw)
To: Jamin Lin, Peter Maydell, Steven Lee, Troy Lee, Andrew Jeffery,
Joel Stanley, open list:ASPEED BMCs,
open list:All patches CC here
Cc: troy_lee
On 5/22/25 04:33, Jamin Lin wrote:
> On big-endian hosts, the aspeed_ram_capacity_write() function previously passed
> the address of a 64-bit "data" variable directly to address_space_write(),
> assuming host and guest endianness matched.
>
> However, the data is expected to be written in little-endian format to DRAM.
> On big-endian hosts, this led to incorrect data being written into DRAM,
> which caused the guest firmware to misdetect the DRAM size.
>
> As a result, U-Boot fails to boot and hangs.
>
> - Replaces the "address_space_write()" call with "address_space_stl_le()",
> which performs an explicit 32-bit little-endian write.
> - Updating the MemoryRegionOps to restrict access to exactly 4 bytes
> using .valid.{min,max}_access_size = 4 and .impl.min_access_size = 4.
>
> Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
> Fixes: 7436db1 ("aspeed/soc: fix incorrect dram size for AST2700")
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Thanks,
C.
> ---
> hw/arm/aspeed_ast27x0.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c
> index 1974a25766..82a5ecff04 100644
> --- a/hw/arm/aspeed_ast27x0.c
> +++ b/hw/arm/aspeed_ast27x0.c
> @@ -346,8 +346,9 @@ static void aspeed_ram_capacity_write(void *opaque, hwaddr addr, uint64_t data,
> * If writes the data to the address which is beyond the ram size,
> * it would write the data to the "address % ram_size".
> */
> - result = address_space_write(&s->dram_as, addr % ram_size,
> - MEMTXATTRS_UNSPECIFIED, &data, 4);
> + address_space_stl_le(&s->dram_as, addr % ram_size, data,
> + MEMTXATTRS_UNSPECIFIED, &result);
> +
> if (result != MEMTX_OK) {
> qemu_log_mask(LOG_GUEST_ERROR,
> "%s: DRAM write failed, addr:0x%" HWADDR_PRIx
> @@ -360,9 +361,10 @@ static const MemoryRegionOps aspeed_ram_capacity_ops = {
> .read = aspeed_ram_capacity_read,
> .write = aspeed_ram_capacity_write,
> .endianness = DEVICE_LITTLE_ENDIAN,
> + .impl.min_access_size = 4,
> .valid = {
> - .min_access_size = 1,
> - .max_access_size = 8,
> + .min_access_size = 4,
> + .max_access_size = 4,
> },
> };
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 0/3] Fix RAM size detection failure on BE hosts
2025-05-22 2:33 [PATCH v2 0/3] Fix RAM size detection failure on BE hosts Jamin Lin via
` (2 preceding siblings ...)
2025-05-22 2:33 ` [PATCH v2 3/3] hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts Jamin Lin via
@ 2025-05-23 8:11 ` Cédric Le Goater
3 siblings, 0 replies; 6+ messages in thread
From: Cédric Le Goater @ 2025-05-23 8:11 UTC (permalink / raw)
To: Jamin Lin, Peter Maydell, Steven Lee, Troy Lee, Andrew Jeffery,
Joel Stanley, open list:ASPEED BMCs,
open list:All patches CC here
Cc: troy_lee
On 5/22/25 04:33, Jamin Lin wrote:
> v1:
> 1. Fix RAM size detection failure on BE hosts
> 2. INTC: Set impl.min_access_size to 4
> Fix coding style
> v2:
> Fix review issue.
>
> Jamin Lin (3):
> hw/intc/aspeed: Set impl.min_access_size to 4
> hw/intc/aspeed Fix coding style
> hw/arm/aspeed_ast27x0: Fix RAM size detection failure on BE hosts
>
> hw/arm/aspeed_ast27x0.c | 10 ++++++----
> hw/intc/aspeed_intc.c | 12 ++++++++++--
> 2 files changed, 16 insertions(+), 6 deletions(-)
>
Applied to aspeed-next.
Thanks,
C.
^ permalink raw reply [flat|nested] 6+ messages in thread