Prepare things for making kexec work on SMP omap variants by initializing
SARM RAM base early. This allows us to configure CPU1 for kexec in case
the previous kernel has put CPU1 in low power mode.
Note that this should not prevent moving other SAR RAM code to live
under drivers. However for kexec, we will need this very early.
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
extern bool gic_dist_disabled(void);
extern void gic_timer_retrigger(void);
extern void omap_smc1(u32 fn, u32 arg);
extern bool gic_dist_disabled(void);
extern void gic_timer_retrigger(void);
extern void omap_smc1(u32 fn, u32 arg);
+extern void omap4_sar_ram_init(void);
extern void __iomem *omap4_get_sar_ram_base(void);
extern void omap_do_wfi(void);
extern void __iomem *omap4_get_sar_ram_base(void);
extern void omap_do_wfi(void);
omap4xxx_check_revision();
omap4xxx_check_features();
omap2_prcm_base_init();
omap4xxx_check_revision();
omap4xxx_check_features();
omap2_prcm_base_init();
omap4_pm_init_early();
omap44xx_voltagedomains_init();
omap44xx_powerdomains_init();
omap4_pm_init_early();
omap44xx_voltagedomains_init();
omap44xx_powerdomains_init();
omap4_pm_init_early();
omap2_prcm_base_init();
omap5xxx_check_revision();
omap4_pm_init_early();
omap2_prcm_base_init();
omap5xxx_check_revision();
omap54xx_voltagedomains_init();
omap54xx_powerdomains_init();
omap54xx_clockdomains_init();
omap54xx_voltagedomains_init();
omap54xx_powerdomains_init();
omap54xx_clockdomains_init();
- * SAR RAM used to save and restore the HW
- * context in low power modes
+ * SAR RAM used to save and restore the HW context in low power modes.
+ * Note that we need to initialize this very early for kexec. See
+ * omap4_mpuss_early_init().
-static int __init omap4_sar_ram_init(void)
+void __init omap4_sar_ram_init(void)
{
unsigned long sar_base;
{
unsigned long sar_base;
else if (soc_is_omap54xx())
sar_base = OMAP54XX_SAR_RAM_BASE;
else
else if (soc_is_omap54xx())
sar_base = OMAP54XX_SAR_RAM_BASE;
else
/* Static mapping, never released */
sar_ram_base = ioremap(sar_base, SZ_16K);
if (WARN_ON(!sar_ram_base))
/* Static mapping, never released */
sar_ram_base = ioremap(sar_base, SZ_16K);
if (WARN_ON(!sar_ram_base))
- return -ENOMEM;
-
- return 0;
-omap_early_initcall(omap4_sar_ram_init);
static const struct of_device_id intc_match[] = {
{ .compatible = "ti,omap4-wugen-mpu", },
static const struct of_device_id intc_match[] = {
{ .compatible = "ti,omap4-wugen-mpu", },