-----Original Message----- From: Lim, Elly Siew Chin elly.siew.chin.lim@intel.com Sent: Wednesday, March 31, 2021 10:39 PM To: u-boot@lists.denx.de Cc: Marek Vasut marex@denx.de; Tan, Ley Foon ley.foon.tan@intel.com; See, Chin Liang chin.liang.see@intel.com; Simon Goldschmidt simon.k.r.goldschmidt@gmail.com; Chee, Tien Fong tien.fong.chee@intel.com; Westergreen, Dalon dalon.westergreen@intel.com; Simon Glass sjg@chromium.org; Gan, Yau Wai yau.wai.gan@intel.com; Lim, Elly Siew Chin elly.siew.chin.lim@intel.com Subject: [v1 03/17] arm: socfpga: Add handoff data support for Intel N5X device
N5X support both HPS handoff data and DDR handoff data. HPS handoff data support re-use Straix10 and Agilex code. DDR handoff data is newly introduced for N5X.
Signed-off-by: Siew Chin Lim elly.siew.chin.lim@intel.com
arch/arm/mach-socfpga/include/mach/handoff_soc64.h | 28 +++++++++++++++ arch/arm/mach-socfpga/wrap_handoff_soc64.c | 40 ++++++++++++++++++++++ 2 files changed, 68 insertions(+)
diff --git a/arch/arm/mach-socfpga/include/mach/handoff_soc64.h
[...]
diff --git a/arch/arm/mach-socfpga/wrap_handoff_soc64.c b/arch/arm/mach-socfpga/wrap_handoff_soc64.c index a7ad7a18ed..37b4c360fb 100644 --- a/arch/arm/mach-socfpga/wrap_handoff_soc64.c +++ b/arch/arm/mach-socfpga/wrap_handoff_soc64.c @@ -60,6 +60,46 @@ int socfpga_handoff_read(void *handoff_address, void *table, u32 table_len, debug("at addr 0x%p\n", (u32 *)handoff_address); return -EPERM; }
- } else {
+#if IS_ENABLED(CONFIG_TARGET_SOCFPGA_N5X)
temp = readl(handoff_address);if (temp == SOC64_HANDOFF_DDR_UMCTL2_MAGIC) {debug("%s: umctl2 handoff data =\n{\n",__func__);} else if (temp == SOC64_HANDOFF_DDR_PHY_MAGIC) {debug("%s: PHY handoff data =\n{\n",__func__);} else if (temp ==SOC64_HANDOFF_DDR_PHY_INIT_ENGINE_MAGIC) {
debug("%s: PHY engine handoff data =\n{\n",__func__);}debug("handoff table address = 0x%p table length = 0x%x\n",table_x32, table_len);if (temp == SOC64_HANDOFF_DDR_UMCTL2_MAGIC ||temp == SOC64_HANDOFF_DDR_PHY_MAGIC ||temp ==SOC64_HANDOFF_DDR_PHY_INIT_ENGINE_MAGIC) {
for (i = 0; i < table_len; i++) {*table_x32 = readl(handoff_address +- SOC64_HANDOFF_OFFSET_DATA +
(i * 4));if (!(i % 2))debug(" No.%d Addr 0x%08x: ", i,*table_x32);elsedebug(" 0x%08x\n", *table_x32);table_x32++;}debug("\n}\n");} else {debug("%s: Cannot find HANDOFF MAGIC ",__func__);
debug("at addr 0x%p\n", (u32 *)handoff_address);return -EPERM;}+#endif }
return 0;
1. Can we auto detect the endianness from the magic word? 2. Can merge or simplify the big and little endian flow? Do swap when it is big endian.
Regards Ley Foon
Regards Ley Foon