From c008d30fe85a674842632e32d732e22e0a91b95d Mon Sep 17 00:00:00 2001 From: David Brownell Date: Tue, 24 Nov 2009 21:24:44 -0800 Subject: Cortex-A8: implement DPM This implements the DPM interface for Cortex-A8 cores. It also adds a synchronization operation to the DPM framework, which is needed by the Cortex-A8 after CPSR writes. Signed-off-by: David Brownell --- src/target/arm_dpm.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'src/target/arm_dpm.c') diff --git a/src/target/arm_dpm.c b/src/target/arm_dpm.c index 18a9dcc7..b8107d78 100644 --- a/src/target/arm_dpm.c +++ b/src/target/arm_dpm.c @@ -52,10 +52,8 @@ static int dpm_modeswitch(struct arm_dpm *dpm, enum armv4_5_mode mode) retval = dpm->instr_write_data_r0(dpm, ARMV4_5_MSR_GP(0, 0xf, 0), cpsr); - /* REVISIT on Cortex-A8, we need a Prefetch Flush operation too ... - cortex_a8_exec_opcode(target, - ARMV4_5_MCR(15, 0, 0, 7, 5, 4)); - */ + if (dpm->instr_cpsr_sync) + retval = dpm->instr_cpsr_sync(dpm); return retval; } @@ -142,11 +140,8 @@ static int dpm_write_reg(struct arm_dpm *dpm, struct reg *r, unsigned regnum) ARMV4_5_MSR_GP(0, 0xf, regnum & 1), value); - /* REVISIT on Cortex-A8, we need a Prefetch Flush operation - * after writing CPSR ... - cortex_a8_exec_opcode(target, - ARMV4_5_MCR(15, 0, 0, 7, 5, 4)); - */ + if (regnum == 16 && dpm->instr_cpsr_sync) + retval = dpm->instr_cpsr_sync(dpm); break; } -- cgit v1.2.3