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Re: [RFC PATCH v2] arm: dom0less: add TEE support
- To: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Fri, 31 May 2024 17:56:16 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>
- Delivery-date: Fri, 31 May 2024 17:56:43 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHas4LmA3+MKr53jE6Kc+pdYgdQGLGxoCWA
- Thread-topic: [RFC PATCH v2] arm: dom0less: add TEE support
Hello all,
Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx> writes:
> Extend TEE mediator interface with two functions :
>
> - tee_get_type_from_dts() returns TEE type based on input string
> - tee_make_dtb_node() creates a DTB entry for the selected
> TEE mediator
>
[..]
> bool __init is_dom0less_mode(void)
> {
> @@ -650,6 +651,10 @@ static int __init prepare_dtb_domU(struct domain *d,
> struct kernel_info *kinfo)
> if ( ret )
> goto err;
>
I forgot to add
#ifdef CONFIG_TEE
> + /* We are making assumption that every mediator sets d->arch.tee */
> + if ( d->arch.tee )
> + tee_make_dtb_node(kinfo->fdt);
> +
#endif
So build fails if TEE is disabled.
I'll fix this in the next version. Anyways, this is RFC.
> /*
> * domain_handle_dtb_bootmodule has to be called before the rest of
> * the device tree is generated because it depends on the value of
> @@ -871,6 +876,7 @@ void __init create_domUs(void)
> unsigned int flags = 0U;
> uint32_t val;
> int rc;
> + const char *tee_name;
[...]
--
WBR, Volodymyr
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