setos

commit d35df0faa7faebfd81090978334c5362b167477d
parent f69e9f899a048a149673e09638e7bcd6cc6b8f33
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Wed, 24 Apr 2024 08:43:23 +0900

set DCBAAP
	need alignmen. this can be done by including stdalign.h and
		using alignas(64). but I don't want to use that.

Diffstat:
M
sys/src/kernel/main.c
 | 
8
++++++++

1 file changed, 8 insertions(+), 0 deletions(-)
diff --git a/sys/src/kernel/main.c b/sys/src/kernel/main.c
@@ -96,9 +96,17 @@ kernel_main(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop)
 	}
 	xhc.op->CONFIG |= 1; // CONFIG.MaxSlotsEn
 	cons_printf(&con0, "CONFIG: %x\n", xhc.op->CONFIG);
+	// TODO: align DCBAAP in 64-byte.
 	xhc_device_context *DCBAAP[2] = {0};
+	if (((uint64) DCBAAP&~(uint64)0x3f) != (uint64) DCBAAP) {
+		cons_printf(&con0, "DCBAAP not aligned: %x\n", (uint64) DCBAAP);
+		goto halt;
+	}
 	xhc_device_context device_context;
 	DCBAAP[1] = &device_context;
+	cons_printf(&con0, "DCBAAP: %x\n", xhc.op->DCBAAP);
+	xhc.op->DCBAAP = (uint64) DCBAAP&~(uint64)0x3f;
+	cons_printf(&con0, "DCBAAP: %x\n", xhc.op->DCBAAP);
 
 	cons_printf(&con0, "local apic id: %x\n", *(uint32 *) (0xfee00020) >> 24);
 	uintptr pci_config_base = (uintptr) pci_xhc;