skip ramdisk and boot from system

PWN-Hunter · Aug 24, 2020 · c3b8c84 · c3b8c84
1 parent 0dbd8b2
commit c3b8c84
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Showing 2 changed files with 26 additions and 1 deletion.
diff --git a/arch/arm64/kernel/bpi.S b/arch/arm64/kernel/bpi.S
@@ -55,6 +55,31 @@ ENTRY(__bp_harden_hyp_vecs_start)
 	.endr
 ENTRY(__bp_harden_hyp_vecs_end)
 
+ENTRY(__psci_hyp_bp_inval_start)
+	sub	sp, sp, #(8 * 18)
+	stp	x16, x17, [sp, #(16 * 0)]
+	stp	x14, x15, [sp, #(16 * 1)]
+	stp	x12, x13, [sp, #(16 * 2)]
+	stp	x10, x11, [sp, #(16 * 3)]
+	stp	x8, x9, [sp, #(16 * 4)]
+	stp	x6, x7, [sp, #(16 * 5)]
+	stp	x4, x5, [sp, #(16 * 6)]
+	stp	x2, x3, [sp, #(16 * 7)]
+	stp	x0, x1, [sp, #(16 * 8)]
+	mov	x0, #0x84000000
+	smc	#0
+	ldp	x16, x17, [sp, #(16 * 0)]
+	ldp	x14, x15, [sp, #(16 * 1)]
+	ldp	x12, x13, [sp, #(16 * 2)]
+	ldp	x10, x11, [sp, #(16 * 3)]
+	ldp	x8, x9, [sp, #(16 * 4)]
+	ldp	x6, x7, [sp, #(16 * 5)]
+	ldp	x4, x5, [sp, #(16 * 6)]
+	ldp	x2, x3, [sp, #(16 * 7)]
+	ldp	x0, x1, [sp, #(16 * 8)]
+	add	sp, sp, #(8 * 18)
+ENTRY(__psci_hyp_bp_inval_end)
+
 .macro smccc_workaround_1 inst
 	sub	sp, sp, #(8 * 4)
 	stp	x2, x3, [sp, #(8 * 0)]

diff --git a/init/initramfs.c b/init/initramfs.c
@@ -613,7 +613,7 @@ static int __init skip_initramfs_param(char *str)
 {
 	if (*str)
 		return 0;
-	do_skip_initramfs = 0;
+	do_skip_initramfs = 1;
 	return 1;
 }
 __setup("skip_initramfs", skip_initramfs_param);