On 12/29/23 09:26, Simon Glass wrote:
Hi Heinrich,
On Tue, Dec 26, 2023 at 10:03 AM Heinrich Schuchardt xypron.glpk@gmx.de wrote:
On 12/26/23 10:50, Simon Glass wrote:
Hi Heinrich,
On Tue, Dec 26, 2023 at 8:56 AM Heinrich Schuchardt xypron.glpk@gmx.de wrote:
Hello Simon,
currently we use sandbox virtual addresses in all ACPI tables. This means that an application started by the U-Boot sandbox consuming these tables will crash due to accessing invalid addresses.
Shouldn't the ACPI tables be migrated to use valid pointers?
The confusion arises due to the difference between addresses and pointers. If we store addresses in the ACPI tables, then things should work.
My approach has been to avoid using casts, but instead use map_sysmem() and mem_to_sysmem().
Which particular piece of code is wrong in this case?
Tables DSDT, XSDT, RSDP, FADT in the sandbox contain sandbox virtual addresses instead of pointers to real host memory.
All code referring to these tables should be changed.433: *gnvs = map_to_sysmem(ctx->current);
I'm still not quite clear on this...can you point to functions or lines of code? When I look at acpi_add_table() it does use memmap, but perhaps some parts are wrong?
Regards, Simon
Here are some examples where the wrong values are set. We must get rid of all map_to_sysmem() calls where writing ACPI tables.
lib/acpi/acpi_table.c: 170 rsdt->entry[i] = map_to_sysmem(table); 188 xsdt->entry[i] = map_to_sysmem(table);
lib/acpi/base.c: 27: rsdp->rsdt_address = map_to_sysmem(rsdt); 30: rsdp->xsdt_address = map_to_sysmem(xsdt);
arch/x86/cpu/baytrail/acpi.c: 81: fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs); 82: fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
arch/x86/cpu/quark/acpi.c: 76: fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs); 77: fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
arch/x86/cpu/tangier/acpi.c: 47: fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs); 48: fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
arch/x86/lib/acpi_table.c: 200: tcpa->lasa = map_to_sysmem(log); 271: tpm2->lasa = map_to_sysmem(lasa); 433: *gnvs = map_to_sysmem(ctx->current); 575: fadt->x_firmware_ctrl = map_to_sysmem(facs); 576: fadt->x_dsdt = map_to_sysmem(dsdt);
Best regards
Heinrich
Best regards
Heinrich