Hi,
> Currently we bypass smmu and has finished boot process, later we will discuss whether there is a scenario for using smmu in the project.
That's great news!
> Yes, we use it on the server and need to support LPA.
Just as a matter of clarifying, Hafnium treats FEAT_LPA by restricting the physical address space to 48 bits:
https://git.trustedfirmware.org/hafnium/hafnium.git/tree/src/arch/aarch64/m…
The reason is that with FEAT_LPA, only the 16KB/64KB translation granules are supported, and Hafnium only supports the 4KB translation granule.
It means the normal world shall not attempt providing physical addresses (e.g. in memory sharing operations to the SPMC) where the PA uses an address size greater than 48 bits.
Is this a reasonable assumption when integrating in your system?
Secondly we were reported a slight issue when applying this restriction by Jens @ Linaro.
I appreciate the change below might be submitted shortly for upstream.
https://github.com/jenswi-linaro/hafnium/commit/659c79d5eacf32e8f5fcb1a6403…
Regards,
Olivier.
From: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Sent: 06 December 2022 10:49
To: Olivier Deprez <Olivier.Deprez(a)arm.com>; 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Cc: hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>; 常琳(特睿) <terui.cl(a)alibaba-inc.com>
Subject: 回复：回复：SMMU Configuration
Hi Olivier,
Thank you very much for your reply and suggestion.
Currently we bypass smmu and has finished boot process, later we will discuss whether there is a scenario for using smmu in the project.
Other question are you relying on FEAT_LPA/FEAT_LPA2?
---Yes, we use it on the server and need to support LPA.
---------------------------------------------------------------------------------------------------------------------------------------------------------------
本邮件及其附件含有阿里巴巴集团的商业秘密信息，仅限于发送给上面地址中列出的个人和群组，禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息，如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。 This email and its attachments contain confidential information from Alibaba Group, which is intended only for the person or entity whose address is listed above. Any use of information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
------------------------------------------------------------------
发件人：Olivier Deprez <Olivier.Deprez(a)arm.com>
发送时间：2022年12月1日(星期四) 17:12
收件人：赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>; 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
抄 送：hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>; 常琳(特睿) <terui.cl(a)alibaba-inc.com>
主 题：Re: 回复：SMMU Configuration
Hi,
> Since our platform uses the server's cpu, smmu does have SMMU_S_IDR1.S_SIDSIZE=24，
Thanks for confirming.
> Does the smmu driver of Hafnium support 2-level Stream Table to reduce memory usage?
No, as observed here:
https://git.trustedfirmware.org/hafnium/hafnium.git/tree/src/arch/aarch64/a…
But this is an interesting input to us, as we've validated the driver with a low STEs count and this only required a linear table.
So this is an improvement we may think about.
> hafnium commit hash dd883207ee9b31c19169adf97c918d561dcb9a
> yes，i have set memory range security attributes by the TZC controller.
Alright.
Before going further, do you confirm you have use cases requiring this SMMU driver/component?
In particular do you have devices upstream to this SMMU generating transactions through a secure stream ID?
e.g. this can be an SPI peripheral only accessible from the secure world?
What I mean here is there is no point in including the driver (and consuming a lot of resources) if there is no use case to fulfill eventually?
If there are, then yes, we can go ahead and find solutions to enable such use cases.
For the sake of experiment, did you attempt increasing the number of heap pages beyond 262144?
I don't have a clear idea of the memory requirements for your platform. In the reference code, the default is 180 heap pages, but I assume this can increase a lot depending on the memory size, secure partitions S2 mappings etc.
Other question are you relying on FEAT_LPA/FEAT_LPA2?
Regards,
Olivier.
From: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Sent: 01 December 2022 04:00
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Cc: hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>; 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>; 常琳(特睿) <terui.cl(a)alibaba-inc.com>
Subject: 回复：SMMU Configuration
Hi，
1、Since our platform uses the server's cpu, smmu does have SMMU_S_IDR1.S_SIDSIZE=24， Does the smmu driver of Hafnium support 2-level Stream Table to reduce memory usage？
2、 hafnium commit hash dd883207ee9b31c19169adf97c918d561dcb9a5c
3、 yes，i have set memory range security attributes by the TZC controller.
---------------------------------------------------------------------------------------------------------------------------------------------------------------
本邮件及其附件含有阿里巴巴集团的商业秘密信息，仅限于发送给上面地址中列出的个人和群组，禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息，如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。 This email and its attachments contain confidential information from Alibaba Group, which is intended only for the person or entity whose address is listed above. Any use of information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
------------------------------------------------------------------
发件人：Olivier Deprez <Olivier.Deprez(a)arm.com>
发送时间：2022年11月30日(星期三) 17:17
收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>; Olivier Deprez <Olivier.Deprez(a)arm.com>
抄 送：赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>; hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>
主 题：Re: SMMU Configuration
Hi,
Another out of curiosity question about:
VERBOSE: SMMUv3: Memory allocated at 0000008800043000 for CMDQ
Hafnium as SPMC in the secure side must allocate data structures only from secure memory.
Do you confirm this memory range is marked secure by the TZASC controller?
Regards,
Olivier.
From: Olivier Deprez via Hafnium <hafnium(a)lists.trustedfirmware.org>
Sent: 30 November 2022 10:13
To: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Cc: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>; hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>
Subject: [Hafnium] Re: SMMU Configuration
Hi,
1/ About:
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
I wonder if this is a realistic value suggesting SMMU_S_IDR1.S_SIDSIZE=24?
In which case the stream table size would grow up to 1GB.
Can you confirm this parameter value on your platform?
Also can you confirm the smmu base address on your platform, as it may be that hafnium probes the smmu io space from a wrong address?
2/ can you tell which commit hash you're using for hafnium?
We've observed random stack overflows corrupting data sections (in this case the smmu static data) because of stack size limitation.
Can you confirm you have this change in your tree:
https://git.trustedfirmware.org/hafnium/hafnium.git/commit/?id=64b421e19a06…
Thanks, Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 28 November 2022 10:48
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Cc: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Subject: SMMU Configuration
Hi,
when I enabled SMMU by set the config file as follows：
aarch64_toolchains("secure_aem_v8a_fvp") {
cpu = "cortex-a57"
origin_address = "0x06000000"
boot_flow = "//src/boot_flow:spmc"
console = "//src/arch/aarch64/pl011"
iommu = "//src/arch/aarch64/arm_smmuv3"
gic_version = 3
gicd_base_address = "0x2e000000"
gicr_base_address = "0x2e140000"
gicr_frames = 8
heap_pages = 100000
max_cpus = 8
max_vms = 16
# branch_protection = "standard"
toolchain_args = {
plat_ffa = "//src/arch/aarch64/plat/ffa:spmc"
plat_psci = "//src/arch/aarch64/plat/psci:spmc"
plat_interrupts = "//src/arch/aarch64/plat/interrupts:gicv3"
plat_prng = "//src/arch/aarch64/plat/prng:prng"
secure_world = "1"
pl011_base_address = "0x2A400000"
smmu_base_address = "0x3FC00000"
smmu_memory_size = "0x400000"
# enable_mte = "1"
plat_log_level = "LOG_LEVEL_VERBOSE"
}
}
I encountered a problem，The log is as follows， there is not enough memory for init SMMU， I have define “heap_pages to 100000”， but it's still not enough，Do you have any suggestions?
VERBOSE: SMMUv3 mapped at 000000003fc00000
VERBOSE: SMMUv3: write to (S_)GBPA
VERBOSE: SMMUv3: write to (S_)CR0
VERBOSE: SMMUv3: Input Addr: 48-bits, Output Addr: 48-bits
VERBOSE: SMMUv3: Total CMDQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800043000 for CMDQ
VERBOSE: SMMUv3: write to (S_)CMDQ_BASE
VERBOSE: SMMUv3: write to (S_)CMDQ_CONS, (S_)CMDQ_PROD
VERBOSE: SMMUv3: Total EVTQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800844000 for EVTQ
VERBOSE: SMMUv3: write to (S_)EVTQ_BASE
VERBOSE: SMMUv3: write to (S_)EVTQ_PROD,(S_)EVTQ_CONS
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
ERROR: SMMUv3: Could not allocate memory for stream table entries
ERROR: SMMUv3: Failed to initialize driver
Panic: Could not initialize IOMMUs.
--
Hafnium mailing list -- hafnium(a)lists.trustedfirmware.org
To unsubscribe send an email to hafnium-leave(a)lists.trustedfirmware.org
Hi,
> Since our platform uses the server's cpu, smmu does have SMMU_S_IDR1.S_SIDSIZE=24，
Thanks for confirming.
> Does the smmu driver of Hafnium support 2-level Stream Table to reduce memory usage?
No, as observed here:
https://git.trustedfirmware.org/hafnium/hafnium.git/tree/src/arch/aarch64/a…
But this is an interesting input to us, as we've validated the driver with a low STEs count and this only required a linear table.
So this is an improvement we may think about.
> hafnium commit hash dd883207ee9b31c19169adf97c918d561dcb9a
> yes，i have set memory range security attributes by the TZC controller.
Alright.
Before going further, do you confirm you have use cases requiring this SMMU driver/component?
In particular do you have devices upstream to this SMMU generating transactions through a secure stream ID?
e.g. this can be an SPI peripheral only accessible from the secure world?
What I mean here is there is no point in including the driver (and consuming a lot of resources) if there is no use case to fulfill eventually?
If there are, then yes, we can go ahead and find solutions to enable such use cases.
For the sake of experiment, did you attempt increasing the number of heap pages beyond 262144?
I don't have a clear idea of the memory requirements for your platform. In the reference code, the default is 180 heap pages, but I assume this can increase a lot depending on the memory size, secure partitions S2 mappings etc.
Other question are you relying on FEAT_LPA/FEAT_LPA2?
Regards,
Olivier.
From: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Sent: 01 December 2022 04:00
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Cc: hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>; 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>; 常琳(特睿) <terui.cl(a)alibaba-inc.com>
Subject: 回复：SMMU Configuration
Hi，
1、Since our platform uses the server's cpu, smmu does have SMMU_S_IDR1.S_SIDSIZE=24， Does the smmu driver of Hafnium support 2-level Stream Table to reduce memory usage？
2、 hafnium commit hash dd883207ee9b31c19169adf97c918d561dcb9a5c
3、 yes，i have set memory range security attributes by the TZC controller.
---------------------------------------------------------------------------------------------------------------------------------------------------------------
本邮件及其附件含有阿里巴巴集团的商业秘密信息，仅限于发送给上面地址中列出的个人和群组，禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息，如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。 This email and its attachments contain confidential information from Alibaba Group, which is intended only for the person or entity whose address is listed above. Any use of information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
------------------------------------------------------------------
发件人：Olivier Deprez <Olivier.Deprez(a)arm.com>
发送时间：2022年11月30日(星期三) 17:17
收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>; Olivier Deprez <Olivier.Deprez(a)arm.com>
抄 送：赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>; hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>
主 题：Re: SMMU Configuration
Hi,
Another out of curiosity question about:
VERBOSE: SMMUv3: Memory allocated at 0000008800043000 for CMDQ
Hafnium as SPMC in the secure side must allocate data structures only from secure memory.
Do you confirm this memory range is marked secure by the TZASC controller?
Regards,
Olivier.
From: Olivier Deprez via Hafnium <hafnium(a)lists.trustedfirmware.org>
Sent: 30 November 2022 10:13
To: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Cc: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>; hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>
Subject: [Hafnium] Re: SMMU Configuration
Hi,
1/ About:
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
I wonder if this is a realistic value suggesting SMMU_S_IDR1.S_SIDSIZE=24?
In which case the stream table size would grow up to 1GB.
Can you confirm this parameter value on your platform?
Also can you confirm the smmu base address on your platform, as it may be that hafnium probes the smmu io space from a wrong address?
2/ can you tell which commit hash you're using for hafnium?
We've observed random stack overflows corrupting data sections (in this case the smmu static data) because of stack size limitation.
Can you confirm you have this change in your tree:
https://git.trustedfirmware.org/hafnium/hafnium.git/commit/?id=64b421e19a06…
Thanks, Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 28 November 2022 10:48
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Cc: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Subject: SMMU Configuration
Hi,
when I enabled SMMU by set the config file as follows：
aarch64_toolchains("secure_aem_v8a_fvp") {
cpu = "cortex-a57"
origin_address = "0x06000000"
boot_flow = "//src/boot_flow:spmc"
console = "//src/arch/aarch64/pl011"
iommu = "//src/arch/aarch64/arm_smmuv3"
gic_version = 3
gicd_base_address = "0x2e000000"
gicr_base_address = "0x2e140000"
gicr_frames = 8
heap_pages = 100000
max_cpus = 8
max_vms = 16
# branch_protection = "standard"
toolchain_args = {
plat_ffa = "//src/arch/aarch64/plat/ffa:spmc"
plat_psci = "//src/arch/aarch64/plat/psci:spmc"
plat_interrupts = "//src/arch/aarch64/plat/interrupts:gicv3"
plat_prng = "//src/arch/aarch64/plat/prng:prng"
secure_world = "1"
pl011_base_address = "0x2A400000"
smmu_base_address = "0x3FC00000"
smmu_memory_size = "0x400000"
# enable_mte = "1"
plat_log_level = "LOG_LEVEL_VERBOSE"
}
}
I encountered a problem，The log is as follows， there is not enough memory for init SMMU， I have define “heap_pages to 100000”， but it's still not enough，Do you have any suggestions?
VERBOSE: SMMUv3 mapped at 000000003fc00000
VERBOSE: SMMUv3: write to (S_)GBPA
VERBOSE: SMMUv3: write to (S_)CR0
VERBOSE: SMMUv3: Input Addr: 48-bits, Output Addr: 48-bits
VERBOSE: SMMUv3: Total CMDQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800043000 for CMDQ
VERBOSE: SMMUv3: write to (S_)CMDQ_BASE
VERBOSE: SMMUv3: write to (S_)CMDQ_CONS, (S_)CMDQ_PROD
VERBOSE: SMMUv3: Total EVTQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800844000 for EVTQ
VERBOSE: SMMUv3: write to (S_)EVTQ_BASE
VERBOSE: SMMUv3: write to (S_)EVTQ_PROD,(S_)EVTQ_CONS
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
ERROR: SMMUv3: Could not allocate memory for stream table entries
ERROR: SMMUv3: Failed to initialize driver
Panic: Could not initialize IOMMUs.
--
Hafnium mailing list -- hafnium(a)lists.trustedfirmware.org
To unsubscribe send an email to hafnium-leave(a)lists.trustedfirmware.org
Hi,
1/ About:
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
I wonder if this is a realistic value suggesting SMMU_S_IDR1.S_SIDSIZE=24?
In which case the stream table size would grow up to 1GB.
Can you confirm this parameter value on your platform?
Also can you confirm the smmu base address on your platform, as it may be that hafnium probes the smmu io space from a wrong address?
2/ can you tell which commit hash you're using for hafnium?
We've observed random stack overflows corrupting data sections (in this case the smmu static data) because of stack size limitation.
Can you confirm you have this change in your tree:
https://git.trustedfirmware.org/hafnium/hafnium.git/commit/?id=64b421e19a06…
Thanks, Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 28 November 2022 10:48
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Cc: 赵哲(为哲) <weizhe.zz(a)alibaba-inc.com>
Subject: SMMU Configuration
Hi,
when I enabled SMMU by set the config file as follows：
aarch64_toolchains("secure_aem_v8a_fvp") {
cpu = "cortex-a57"
origin_address = "0x06000000"
boot_flow = "//src/boot_flow:spmc"
console = "//src/arch/aarch64/pl011"
iommu = "//src/arch/aarch64/arm_smmuv3"
gic_version = 3
gicd_base_address = "0x2e000000"
gicr_base_address = "0x2e140000"
gicr_frames = 8
heap_pages = 100000
max_cpus = 8
max_vms = 16
# branch_protection = "standard"
toolchain_args = {
plat_ffa = "//src/arch/aarch64/plat/ffa:spmc"
plat_psci = "//src/arch/aarch64/plat/psci:spmc"
plat_interrupts = "//src/arch/aarch64/plat/interrupts:gicv3"
plat_prng = "//src/arch/aarch64/plat/prng:prng"
secure_world = "1"
pl011_base_address = "0x2A400000"
smmu_base_address = "0x3FC00000"
smmu_memory_size = "0x400000"
# enable_mte = "1"
plat_log_level = "LOG_LEVEL_VERBOSE"
}
}
I encountered a problem，The log is as follows， there is not enough memory for init SMMU， I have define “heap_pages to 100000”， but it's still not enough，Do you have any suggestions?
VERBOSE: SMMUv3 mapped at 000000003fc00000
VERBOSE: SMMUv3: write to (S_)GBPA
VERBOSE: SMMUv3: write to (S_)CR0
VERBOSE: SMMUv3: Input Addr: 48-bits, Output Addr: 48-bits
VERBOSE: SMMUv3: Total CMDQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800043000 for CMDQ
VERBOSE: SMMUv3: write to (S_)CMDQ_BASE
VERBOSE: SMMUv3: write to (S_)CMDQ_CONS, (S_)CMDQ_PROD
VERBOSE: SMMUv3: Total EVTQ entries: 524288
VERBOSE: SMMUv3: Memory allocated at 0000008800844000 for EVTQ
VERBOSE: SMMUv3: write to (S_)EVTQ_BASE
VERBOSE: SMMUv3: write to (S_)EVTQ_PROD,(S_)EVTQ_CONS
VERBOSE: SMMUv3 Total StreamTable entries: 16777216
ERROR: SMMUv3: Could not allocate memory for stream table entries
ERROR: SMMUv3: Failed to initialize driver
Panic: Could not initialize IOMMUs.
Cc Hafnium list.
________________________________
From: Olivier Deprez <Olivier.Deprez(a)arm.com>
Sent: 25 November 2022 17:41
To: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Subject: Re: 回复：run hafnium as spmc at s-el2
Hi,
See answers inline [OD]
Regards,
Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 25 November 2022 03:18
To: Olivier Deprez <Olivier.Deprez(a)arm.com>
Subject: 回复：run hafnium as spmc at s-el2
Hello，expert
I do intend to use OP-TEE as SEL1 payload / secure partition with hafnium running on SEL2 and run linux in the normal world.
In my environment，when TF-A and Hafnium boot, only a single primary core runs. After the os starts, the secondary core is booted by bl31.
Now, I have some other questions ：
1）When entering hafnium to initialize gic, I get the following error (the first two lines are my debug prints) :
populate_redist_base_addrs:375,typer_reg:844425014019047,current_rdist_frame:2e200000
populate_redist_base_addrs:375,typer_reg:0,current_rdist_frame:2e220000
ERROR: Data abort: pc=0xff20558c, esr=0x96000007, ec=0x25, far=0x2e240008
The gic appears to be missing the corresponding page table configuration.
Hafnium runs on s-el2, and according to the arm specification, it has a set of page tables for itself and only does stage 1 translation.
So how to configure the page table for hafnium to include the address space where the gic resides?
[OD] Are you using the Base FVP platform?
The SPMC run address suggests this might be an Infra/Neoverse platform?
Did you take care of creating a new platform, or update the FVP defaults for the GICD/GICR system addresses?
https://git.trustedfirmware.org/hafnium/project/reference.git/tree/BUILD.gn…
2）Is smmu necessary for hanfium to run as SPMC, how much running memory does hafnium need？
And how to specify the address space where its running memory resides?
[OD] This depends first if your platform implements an SMMU and it supports secure S2 translation (from >=SMMUv3.2).
Second condition is if you need to protect VMs from a peripheral upstream from this SMMU.
If not, you can omit the SMMU driver by removing the iommu property:
https://git.trustedfirmware.org/hafnium/project/reference.git/tree/BUILD.gn…
3）When TF-A and Hafnium boot, only a single primary core runs. How to configure the cpu core to boot the hafnium?
[OD] When the platform resets and starts, a single core is up (aka the primary core) and TF-A boots on this core through BL1/BL2/BL31 stages.
From there BL31 launches BL32/Hafnium on the same core.
There is no configurability from a SW perspective. It is up to the platform itself to tie onto which core the system boots.
If running on a model, that *may* be controlled by a model parameter.
In addition, there are multiple cores at runtime. How does hanfium switch cores to switch the corresponding secure partions?
How does core switching relate to vCPU switching？
[OD] Hafnium is controlled by a normal world driver e.g. the linux upstream FF-A driver: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drive… and a TEE driver e.g. OP-TEE driver https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drive…
The primary scheduler is linux' and Hafnium is not performing scheduling decisions.
As an example, a direct request on CPU1 emitted from the normal world through an SMC, is processed by the SPMC and delivered to the SP(OP-TEE) on vCPU1.
Thank you very much～
------------------------------------------------------------------
发件人：Olivier Deprez <Olivier.Deprez(a)arm.com>
发送时间：2022年11月25日(星期五) 03:24
收件人：梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
抄 送：hafnium(a)lists.trustedfirmware.org <hafnium(a)lists.trustedfirmware.org>
主 题：Re: run hafnium as spmc at s-el2
Hi Mei Jianqiang,
> In my environment, hafnium is running as spmc in s-el2, and my question is as follows:
Can you tell a bit more on your setup, if possible, do you intend to use OP-TEE as SEL1 payload / secure partition?
Are you running linux in the normal world?
> 1) In the spmc_optee_sp_manifest.dts file, there is an attribute load_address = <0x0 0xFF200000>.
> What do the two parts of load_address mean respectively? Any details on other configurations in the dts file?
In the TF-A tree plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts is a sample device tree consumed by Hafnium/SPMC to describe the system properties and declare secure partitions.
Please refer to https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partit…
The load_address field specifies the location at which the SPMC finds a 'partition package'. It consists of a partition's DT blob and a partition image.
https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partit…
In this sample 0x0 is the high 32b part of the physical address and 0xFF200000 the lower 32 bits.
> 2) If only one core is available during the startup of hafnium, how to configure it?
> In this case, when I set CPUS_PER_CLUSTER 1 in fvp-defs.dtsi file of ATF reference code, the building error is: Duplicate node name /cpus/cpu@20000. Why?
I don't believe you should do change directly in this file, but rather provide the system topology through the TF-A command line by using FVP_MAX_CPUS_PER_CLUSTER/FVP_CLUSTER_COUNT/FVP_MAX_PE_PER_CPU
The device tree should describe cpus as they exist when the system is booted at run-time.
When TF-A and Hafnium boot, only a single primary core runs anyways so is this really what you intend to do?
Regards,
Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 24 November 2022 11:33
To: hafnium-owner <hafnium-owner(a)lists.trustedfirmware.org>
Subject: run hafnium as spmc at s-el2
Hello expert,
I'm a developer at Alibaba Cloud, and I'm having some problems using hafnium.
In my environment, hafnium is running as spmc in s-el2, and my question is as follows:
1) In the spmc_optee_sp_manifest.dts file, there is an attribute load_address = <0x0 0xFF200000>.
What do the two parts of load_address mean respectively? Any details on other configurations in the dts file?
2) If only one core is available during the startup of hafnium, how to configure it?
In this case, when I set CPUS_PER_CLUSTER 1 in fvp-defs.dtsi file of ATF reference code, the building error is: Duplicate node name /cpus/cpu@20000. Why?
Looking forward to your reply. Thank you very much~
Hi Mei Jianqiang,
> In my environment, hafnium is running as spmc in s-el2, and my question is as follows:
Can you tell a bit more on your setup, if possible, do you intend to use OP-TEE as SEL1 payload / secure partition?
Are you running linux in the normal world?
> 1) In the spmc_optee_sp_manifest.dts file, there is an attribute load_address = <0x0 0xFF200000>.
> What do the two parts of load_address mean respectively? Any details on other configurations in the dts file?
In the TF-A tree plat/arm/board/fvp/fdts/fvp_spmc_optee_sp_manifest.dts is a sample device tree consumed by Hafnium/SPMC to describe the system properties and declare secure partitions.
Please refer to https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partit…
The load_address field specifies the location at which the SPMC finds a 'partition package'. It consists of a partition's DT blob and a partition image.
https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partit…
In this sample 0x0 is the high 32b part of the physical address and 0xFF200000 the lower 32 bits.
> 2) If only one core is available during the startup of hafnium, how to configure it?
> In this case, when I set CPUS_PER_CLUSTER 1 in fvp-defs.dtsi file of ATF reference code, the building error is: Duplicate node name /cpus/cpu@20000. Why?
I don't believe you should do change directly in this file, but rather provide the system topology through the TF-A command line by using FVP_MAX_CPUS_PER_CLUSTER/FVP_CLUSTER_COUNT/FVP_MAX_PE_PER_CPU
The device tree should describe cpus as they exist when the system is booted at run-time.
When TF-A and Hafnium boot, only a single primary core runs anyways so is this really what you intend to do?
Regards,
Olivier.
________________________________
From: 梅建强(禹夜) <meijianqiang.mjq(a)alibaba-inc.com>
Sent: 24 November 2022 11:33
To: hafnium-owner <hafnium-owner(a)lists.trustedfirmware.org>
Subject: run hafnium as spmc at s-el2
Hello expert,
I'm a developer at Alibaba Cloud, and I'm having some problems using hafnium.
In my environment, hafnium is running as spmc in s-el2, and my question is as follows:
1) In the spmc_optee_sp_manifest.dts file, there is an attribute load_address = <0x0 0xFF200000>.
What do the two parts of load_address mean respectively? Any details on other configurations in the dts file?
2) If only one core is available during the startup of hafnium, how to configure it?
In this case, when I set CPUS_PER_CLUSTER 1 in fvp-defs.dtsi file of ATF reference code, the building error is: Duplicate node name /cpus/cpu@20000. Why?
Looking forward to your reply. Thank you very much~
Hello,
We get the following error in the non-secure terminal in the QEMU, while booting the normal world with hafnium(SPMC) at S-EL2 and SP at S-EL1.
NOTICE: Trapped access to system register write: op0=1, op1=0, crn=7, crm=14, op2=2, rt=11.
NOTICE: Injecting Unknown Reason exception into VM 0x8001.
Above system register found as DC CISW.
It found that this happened with the recent hafnium change "feat(interrupts): preferred managed exit signal"
Thanks.
Hi all,
Sorry for asking this question, but I just want to do some tests about Armv8.4.
In my scenario, I wanna boot with ATF, with Armv8.4-enabled FVP, but
without Hafnium. I may need to boot a secure OS.
I know how to boot it with Hafnium, but how about without Hafnium?
Also, I still want some Armv8.4 features to manage my secure OS.
I think I may need (1) shell commands to compile the TF-A, and (2)
shell commands to boot the FVP. Could you help me?
Sincerely,
WANG Chenxu
Hi all,
I want to find a register which will specifically control the Secure
Stage 2 translation. But Arm document does not provide it.
I find that a register, called HCR_EL2, will control the Stage 2
translation. But the document didn't mention which secure type it will
control. Thus, does the Non-secure hypervisor (like KVM) influence the
Secure Stage-2 address translation? For example, disabling it through
HCR_EL2?
Sincerely,
WANG Chenxu
Hi all,
I am not sure whether it is OK to ask the question here, but I still
wish you can help me address the problem.
I used to test Hafnium with FVP, and the Linux kernel is provided by
arm-reference-platform. Recently I want to test something on an OPTEE
kernel (rather than a cactus OS). But, since the provided linux kernel
is a bit old (v5.3), its /drivers/tee/optee will not send FF-A calls.
I find that Linux introduces FF-A ABI to OP-TEE driver since v5.16,
which is a relatively new kernel. Previously I download the Linux
kernel here ( https://git.linaro.org/landing-teams/working/arm/kernel-release.git),
but they only provide old kernels. I also try to replace the "linux"
directory with the upstream Linux v5.17 source code, and use the guide
here (https://community.arm.com/oss-platforms/w/docs/459/modify-linux-kernel-conf…)
to compile. But the source seems to be inconsistent with the
arm-reference-platforms.
Can someone help me?
Sincerely,
WANG Chenxu
