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target arm queue:

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* handle broken AArch64 kernels which assume DTB won't cross a 2MB boundary
  * correct broken SCTLR_EL3 reset value
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20150715' into staging

target arm queue:
 * handle broken AArch64 kernels which assume DTB won't cross a 2MB boundary
 * correct broken SCTLR_EL3 reset value

# gpg: Signature made Wed Jul 15 17:24:24 2015 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"

* remotes/pmaydell/tags/pull-target-arm-20150715:
  hw/arm/boot: Increase fdt alignment
  target-arm: Fix broken SCTLR_EL3 reset

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-07-15 17:28:59 +01:00
parent 711dc6f36b 76e2aef392
commit 7692401a08
2 changed files with 23 additions and 6 deletions
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28
hw/arm/boot.c
View file

@ -735,12 +735,28 @@ static void arm_load_kernel_notify(Notifier *notifier, void *data)
* we point to the kernel args.
*/
if (have_dtb(info)) {
/* Place the DTB after the initrd in memory. Note that some
* kernels will trash anything in the 4K page the initrd
* ends in, so make sure the DTB isn't caught up in that.
*/
hwaddr dtb_start = QEMU_ALIGN_UP(info->initrd_start + initrd_size,
4096);
hwaddr align;
hwaddr dtb_start;
if (elf_machine == EM_AARCH64) {
/*
* Some AArch64 kernels on early bootup map the fdt region as
*
* [ ALIGN_DOWN(fdt, 2MB) ... ALIGN_DOWN(fdt, 2MB) + 2MB ]
*
* Let's play safe and prealign it to 2MB to give us some space.
*/
align = 2 * 1024 * 1024;
} else {
/*
* Some 32bit kernels will trash anything in the 4K page the
* initrd ends in, so make sure the DTB isn't caught up in that.
*/
align = 4096;
}
/* Place the DTB after the initrd in memory with alignment. */
dtb_start = QEMU_ALIGN_UP(info->initrd_start + initrd_size, align);
if (load_dtb(dtb_start, info, 0) < 0) {
exit(1);
}

1
target-arm/helper.c
View file

@ -2752,6 +2752,7 @@ static const ARMCPRegInfo el3_cp_reginfo[] = {
.access = PL3_RW, .writefn = vbar_write, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.mvbar) },
{ .name = "SCTLR_EL3", .state = ARM_CP_STATE_AA64,
.type = ARM_CP_ALIAS, /* reset handled by AArch32 view */
.opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0,
.access = PL3_RW, .raw_writefn = raw_write, .writefn = sctlr_write,
.fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]) },