OMAP4: PRCM: move global reset function for OMAP4 to an OMAP4-specific file
Move the OMAP4 global software reset function to the OMAP4-specific
prm44xx.c file, where it belongs. Part of the long-term process of
moving all of the direct PRCM register writes into lower-layer code.
Also add OCP barriers on OMAP2/3/4 to reduce the chance that the MPU
will continue executing while the system is supposed to be resetting
itself.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index fe0865b..68c541f 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -68,17 +68,16 @@
} else if (cpu_is_omap34xx()) {
prcm_offs = OMAP3430_GR_MOD;
omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
- } else if (cpu_is_omap44xx())
- prcm_offs = OMAP4430_PRM_DEVICE_INST;
- else
+ } else if (cpu_is_omap44xx()) {
+ omap4_prm_global_warm_sw_reset(); /* never returns */
+ } else {
WARN_ON(1);
+ }
- if (cpu_is_omap24xx() || cpu_is_omap34xx())
- prm_set_mod_reg_bits(OMAP_RST_DPLL3_MASK, prcm_offs,
- OMAP2_RM_RSTCTRL);
- if (cpu_is_omap44xx())
- prm_set_mod_reg_bits(OMAP4430_RST_GLOBAL_WARM_SW_MASK,
- prcm_offs, OMAP4_RM_RSTCTRL);
+ /* XXX should be moved to some OMAP2/3 specific code */
+ prm_set_mod_reg_bits(OMAP_RST_DPLL3_MASK, prcm_offs,
+ OMAP2_RM_RSTCTRL);
+ prm_read_mod_reg(prcm_offs, OMAP2_RM_RSTCTRL); /* OCP barrier */
}
/**