From mboxrd@z Thu Jan 1 00:00:00 1970 From: srinidhi.kasagar@stericsson.com (srinidhi kasagar) Date: Tue, 29 Jan 2013 15:47:13 +0530 Subject: [PATCH v2 5/5] ARM: mach-omap2: apply the errata at run time rather Message-ID: <20130129101711.GA23311@bnru10> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Get the pl310 rtl revision number which is stashed by the l2x0 driver and apply the required errata ERRATA_727915 accordingly. Signed-off-by: srinidhi kasagar --- arch/arm/mach-omap2/sleep44xx.S | 25 +++++++++++++++++++++---- 1 files changed, 21 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/sleep44xx.S b/arch/arm/mach-omap2/sleep44xx.S index 88ff83a..7440f65 100644 --- a/arch/arm/mach-omap2/sleep44xx.S +++ b/arch/arm/mach-omap2/sleep44xx.S @@ -157,11 +157,19 @@ skip_scu_gp_set: ldrne r0, [r8, #L2X0_SAVE_OFFSET1] @ memory. cmp r0, #3 bne do_WFI -#ifdef CONFIG_PL310_ERRATA_727915 + /* Check for PL310_ERRATA_727915 */ + ldr r0, =l2x0_revision + cmp r0, #0x4 + beq dosmc + cmp r0, #0x5 + beq dosmc + b nosmc +dosmc: mov r0, #0x03 mov r12, #OMAP4_MON_L2X0_DBG_CTRL_INDEX DO_SMC -#endif + +nosmc: bl omap4_get_l2cache_base mov r2, r0 ldr r0, =0xffff @@ -171,11 +179,20 @@ wait: ldr r1, =0xffff ands r0, r0, r1 bne wait -#ifdef CONFIG_PL310_ERRATA_727915 + + /* Check for PL310_ERRATA_727915 */ + ldr r0, =l2x0_revision + cmp r0, #0x4 + beq dosmc2 + cmp r0, #0x5 + beq dosmc2 + b nosmc2 +dosmc2: mov r0, #0x00 mov r12, #OMAP4_MON_L2X0_DBG_CTRL_INDEX DO_SMC -#endif + +nosmc2: l2x_sync: bl omap4_get_l2cache_base mov r2, r0 -- 1.7.2.dirty