[U-Boot] [PATCH v9 5/7] spl : socfpga: Implement fpga bitstream loading with socfpga loadfs
tien.fong.chee at intel.com
tien.fong.chee at intel.com
Tue Feb 19 03:47:19 UTC 2019
From: Tien Fong Chee <tien.fong.chee at intel.com>
Add support for loading FPGA bitstream to get DDR up running before
U-Boot is loaded into DDR. Boot device initialization, generic firmware
loader and SPL FAT support are required for this whole mechanism to work.
Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
---
changes for v9
- Used ALLOC_CACHE_ALIGN_BUFFER
- De-duplicated the same chunks of codes
changes for v7
- Removed casting for get_fpga_filename
- Removed hard coding DDR address for loading core bistream, using loadable
property from FIT.
- Added checking for config_pins, return if error.
---
arch/arm/mach-socfpga/spl_a10.c | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-socfpga/spl_a10.c b/arch/arm/mach-socfpga/spl_a10.c
index c97eacb..4b658c8 100644
--- a/arch/arm/mach-socfpga/spl_a10.c
+++ b/arch/arm/mach-socfpga/spl_a10.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Copyright (C) 2012 Altera Corporation <www.altera.com>
+ * Copyright (C) 2012-2019 Altera Corporation <www.altera.com>
*/
#include <common.h>
@@ -23,6 +23,11 @@
#include <fdtdec.h>
#include <watchdog.h>
#include <asm/arch/pinmux.h>
+#include <asm/arch/fpga_manager.h>
+#include <mmc.h>
+#include <memalign.h>
+
+#define FPGA_BUFSIZ 16 * 1024
DECLARE_GLOBAL_DATA_PTR;
@@ -68,11 +73,35 @@ u32 spl_boot_mode(const u32 boot_device)
void spl_board_init(void)
{
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, FPGA_BUFSIZ);
+
/* enable console uart printing */
preloader_console_init();
WATCHDOG_RESET();
arch_early_init_r();
+
+ /* If the full FPGA is already loaded, ie.from EPCQ, config fpga pins */
+ if (is_fpgamgr_user_mode()) {
+ int ret = config_pins(gd->fdt_blob, "shared");
+
+ if (ret)
+ return;
+
+ ret = config_pins(gd->fdt_blob, "fpga");
+ if (ret)
+ return;
+ } else if (!is_fpgamgr_early_user_mode()) {
+ /* Program IOSSM(early IO release) or full FPGA */
+ fpgamgr_program(buf, FPGA_BUFSIZ, 0);
+ }
+
+ /* If the IOSSM/full FPGA is already loaded, start DDR */
+ if (is_fpgamgr_early_user_mode() || is_fpgamgr_user_mode())
+ ddr_calibration_sequence();
+
+ if (!is_fpgamgr_user_mode())
+ fpgamgr_program(buf, FPGA_BUFSIZ, 0);
}
void board_init_f(ulong dummy)
--
2.2.0
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