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| author | Marek Vasut <marex@denx.de> | 2019-04-16 23:05:24 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-04-29 10:08:55 +0200 |
| commit | 8df653c32545171ecede4b740e38e8a4af4ed9eb (patch) | |
| tree | e54962d3badf68654d8531c373de8fc198a478b4 /arch/arm/mach-socfpga | |
| parent | 6aebc0d11a10f48a54146c5e71bbef15a1a458fc (diff) | |
| download | u-boot-8df653c32545171ecede4b740e38e8a4af4ed9eb.zip u-boot-8df653c32545171ecede4b740e38e8a4af4ed9eb.tar.gz u-boot-8df653c32545171ecede4b740e38e8a4af4ed9eb.tar.bz2 | |
ARM: socfpga: Factor out handoff register configuration
Factor out the code for programming preloader handoff register values,
the ISWGRP Handoff 0 and 1. These registers later control which bridges
are enabled by the "bridge" command on Gen5 devices.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
Diffstat (limited to 'arch/arm/mach-socfpga')
| -rw-r--r-- | arch/arm/mach-socfpga/include/mach/reset_manager_gen5.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-socfpga/reset_manager_gen5.c | 25 |
2 files changed, 24 insertions, 2 deletions
diff --git a/arch/arm/mach-socfpga/include/mach/reset_manager_gen5.h b/arch/arm/mach-socfpga/include/mach/reset_manager_gen5.h index dd58922..5e490d1 100644 --- a/arch/arm/mach-socfpga/include/mach/reset_manager_gen5.h +++ b/arch/arm/mach-socfpga/include/mach/reset_manager_gen5.h @@ -9,6 +9,7 @@ #include <dt-bindings/reset/altr,rst-mgr.h> void reset_deassert_peripherals_handoff(void); +void socfpga_bridges_set_handoff_regs(bool h2f, bool lwh2f, bool f2h); void socfpga_bridges_reset(int enable); struct socfpga_reset_manager { diff --git a/arch/arm/mach-socfpga/reset_manager_gen5.c b/arch/arm/mach-socfpga/reset_manager_gen5.c index 25baef7..66af924 100644 --- a/arch/arm/mach-socfpga/reset_manager_gen5.c +++ b/arch/arm/mach-socfpga/reset_manager_gen5.c @@ -73,6 +73,28 @@ void reset_deassert_peripherals_handoff(void) #define L3REGS_REMAP_HPS2FPGA_MASK 0x08 #define L3REGS_REMAP_OCRAM_MASK 0x01 +void socfpga_bridges_set_handoff_regs(bool h2f, bool lwh2f, bool f2h) +{ + u32 brgmask = 0x0; + u32 l3rmask = L3REGS_REMAP_OCRAM_MASK; + + if (h2f) + brgmask |= BIT(0); + else + l3rmask |= L3REGS_REMAP_HPS2FPGA_MASK; + + if (lwh2f) + brgmask |= BIT(1); + else + l3rmask |= L3REGS_REMAP_LWHPS2FPGA_MASK; + + if (f2h) + brgmask |= BIT(2); + + writel(brgmask, &sysmgr_regs->iswgrp_handoff[0]); + writel(l3rmask, &sysmgr_regs->iswgrp_handoff[1]); +} + void socfpga_bridges_reset(int enable) { const u32 l3mask = L3REGS_REMAP_LWHPS2FPGA_MASK | @@ -83,8 +105,7 @@ void socfpga_bridges_reset(int enable) /* brdmodrst */ writel(0xffffffff, &reset_manager_base->brg_mod_reset); } else { - writel(0, &sysmgr_regs->iswgrp_handoff[0]); - writel(l3mask, &sysmgr_regs->iswgrp_handoff[1]); + socfpga_bridges_set_handoff_regs(false, false, false); /* Check signal from FPGA. */ if (!fpgamgr_test_fpga_ready()) { |