| Message ID | 20200806035629.18824-1-chee.hong.ang@intel.com |
|---|---|
| State | Accepted |
| Commit | 6b6307ed22121a38c5b1a5198e737e78b7135312 |
| Delegated to: | Simon Goldschmidt |
| Headers | show |
| Series | [v2] arm: socfpga: soc64: Check FPGA Config status register before bridge reset | expand |
> -----Original Message----- > From: Ang, Chee Hong <chee.hong.ang@intel.com> > Sent: Thursday, August 6, 2020 11:56 AM > To: u-boot@lists.denx.de > Cc: Marek Vasut <marex@denx.de>; Simon Goldschmidt > <simon.k.r.goldschmidt@gmail.com>; Tom Rini <trini@konsulko.com>; See, > Chin Liang <chin.liang.see@intel.com>; Tan, Ley Foon > <ley.foon.tan@intel.com>; Ang, Chee Hong <chee.hong.ang@intel.com>; > Chee, Tien Fong <tien.fong.chee@intel.com>; Lim, Elly Siew Chin > <elly.siew.chin.lim@intel.com> > Subject: [PATCH v2] arm: socfpga: soc64: Check FPGA Config status register > before bridge reset > > Instead of querying SDM for FPGA configuration status through mailbox > messages, U-Boot now checks System Manager's FPGA Config status register > for FPGA configuration status before resetting bridge. > > Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com> > --- > arch/arm/mach-socfpga/include/mach/misc.h | 5 +++++ > .../mach-socfpga/include/mach/system_manager_soc64.h | 6 +++++- > arch/arm/mach-socfpga/misc_s10.c | 18 ++++++++++-------- > 3 files changed, 20 insertions(+), 9 deletions(-) > Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com> Regards Ley Foon
diff --git a/arch/arm/mach-socfpga/include/mach/misc.h b/arch/arm/mach-socfpga/include/mach/misc.h index a85c5ae..649d2f6 100644 --- a/arch/arm/mach-socfpga/include/mach/misc.h +++ b/arch/arm/mach-socfpga/include/mach/misc.h @@ -39,6 +39,11 @@ void socfpga_init_security_policies(void); void socfpga_sdram_remap_zero(void); #endif +#if defined(CONFIG_TARGET_SOCFPGA_STRATIX10) || \ + defined(CONFIG_TARGET_SOCFPGA_AGILEX) +int is_fpga_config_ready(void); +#endif + void do_bridge_reset(int enable, unsigned int mask); void socfpga_pl310_clear(void); void socfpga_get_managers_addr(void); diff --git a/arch/arm/mach-socfpga/include/mach/system_manager_soc64.h b/arch/arm/mach-socfpga/include/mach/system_manager_soc64.h index c90f63a..5e3f54a 100644 --- a/arch/arm/mach-socfpga/include/mach/system_manager_soc64.h +++ b/arch/arm/mach-socfpga/include/mach/system_manager_soc64.h @@ -88,8 +88,12 @@ void sysmgr_pinmux_table_delay(const u32 **table, unsigned int *table_len); #define SYSMGR_ECC_OCRAM_EN BIT(0) #define SYSMGR_ECC_OCRAM_SERR BIT(3) #define SYSMGR_ECC_OCRAM_DERR BIT(4) -#define SYSMGR_FPGAINTF_USEFPGA 0x1 +#define SYSMGR_FPGACONFIG_FPGA_COMPLETE BIT(0) +#define SYSMGR_FPGACONFIG_EARLY_USERMODE BIT(1) +#define SYSMGR_FPGACONFIG_READY_MASK (SYSMGR_FPGACONFIG_FPGA_COMPLETE | \ + SYSMGR_FPGACONFIG_EARLY_USERMODE) +#define SYSMGR_FPGAINTF_USEFPGA 0x1 #define SYSMGR_FPGAINTF_NAND BIT(4) #define SYSMGR_FPGAINTF_SDMMC BIT(8) #define SYSMGR_FPGAINTF_SPIM0 BIT(16) diff --git a/arch/arm/mach-socfpga/misc_s10.c b/arch/arm/mach-socfpga/misc_s10.c index 670bfa1..52868fb 100644 --- a/arch/arm/mach-socfpga/misc_s10.c +++ b/arch/arm/mach-socfpga/misc_s10.c @@ -151,17 +151,19 @@ int arch_early_init_r(void) return 0; } +/* Return 1 if FPGA is ready otherwise return 0 */ +int is_fpga_config_ready(void) +{ + return (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_FPGA_CONFIG) & + SYSMGR_FPGACONFIG_READY_MASK) == SYSMGR_FPGACONFIG_READY_MASK; +} + void do_bridge_reset(int enable, unsigned int mask) { /* Check FPGA status before bridge enable */ - if (enable) { - int ret = mbox_get_fpga_config_status(MBOX_RECONFIG_STATUS); - - if (ret && ret != MBOX_CFGSTAT_STATE_CONFIG) - ret = mbox_get_fpga_config_status(MBOX_CONFIG_STATUS); - - if (ret) - return; + if (!is_fpga_config_ready()) { + puts("FPGA not ready. Bridge reset aborted!\n"); + return; } socfpga_bridges_reset(enable);
Instead of querying SDM for FPGA configuration status through mailbox messages, U-Boot now checks System Manager's FPGA Config status register for FPGA configuration status before resetting bridge. Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com> --- arch/arm/mach-socfpga/include/mach/misc.h | 5 +++++ .../mach-socfpga/include/mach/system_manager_soc64.h | 6 +++++- arch/arm/mach-socfpga/misc_s10.c | 18 ++++++++++-------- 3 files changed, 20 insertions(+), 9 deletions(-)