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| author | Tony Lindgren <tony@atomide.com> | 2016-01-14 12:20:47 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2016-01-22 08:26:08 -0800 |
| commit | 0a0b13275558c32bbf6241464a7244b1ffd5afb3 (patch) | |
| tree | 5c068e5d0e4708e376283d399ec611db10f6cd06 | |
| parent | a5311d4d13df80bd71a9e47f9ecaf327f478fab1 (diff) | |
| download | linux-0a0b13275558c32bbf6241464a7244b1ffd5afb3.tar.gz linux-0a0b13275558c32bbf6241464a7244b1ffd5afb3.tar.bz2 linux-0a0b13275558c32bbf6241464a7244b1ffd5afb3.zip | |
ARM: OMAP2+: Fix l2_inv_api_params for rodata
We don't want to write to .text, so let's move l2_inv_api_params
to .data and access it via a pointer.
Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a95 ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/mach-omap2/sleep34xx.S | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S index 8e2a7acb823b..1b9f0520dea9 100644 --- a/arch/arm/mach-omap2/sleep34xx.S +++ b/arch/arm/mach-omap2/sleep34xx.S @@ -436,12 +436,14 @@ skipl2dis: and r1, #0x700 cmp r1, #0x300 beq l2_inv_gp + adr r0, l2_inv_api_params_offset + ldr r3, [r0] + add r3, r3, r0 @ r3 points to dummy parameters mov r0, #40 @ set service ID for PPA mov r12, r0 @ copy secure Service ID in r12 mov r1, #0 @ set task id for ROM code in r1 mov r2, #4 @ set some flags in r2, r6 mov r6, #0xff - adr r3, l2_inv_api_params @ r3 points to dummy parameters dsb @ data write barrier dmb @ data memory barrier smc #1 @ call SMI monitor (smi #1) @@ -475,8 +477,8 @@ skipl2dis: b logic_l1_restore .align -l2_inv_api_params: - .word 0x1, 0x00 +l2_inv_api_params_offset: + .long l2_inv_api_params - . l2_inv_gp: /* Execute smi to invalidate L2 cache */ mov r12, #0x1 @ set up to invalidate L2 @@ -531,6 +533,10 @@ l2dis_3630_offset: l2dis_3630: .word 0 + .data +l2_inv_api_params: + .word 0x1, 0x00 + /* * Internal functions */ |