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Thu, 23 Jul 2026 13:57:06 +0000 (UTC) From: Luca Lauro via B4 Relay Date: Thu, 23 Jul 2026 15:57:40 +0200 Subject: [PATCH 02/19] ARM: mvebu: add lowlevel support for Netgear RN102 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260723-rn102-rn104-series-v1-2-7698d25df866@gmail.com> References: <20260723-rn102-rn104-series-v1-0-7698d25df866@gmail.com> In-Reply-To: <20260723-rn102-rn104-series-v1-0-7698d25df866@gmail.com> To: Sascha Hauer , "open list:BAREBOX" Cc: Luca Lauro X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784815061; l=1588; i=famlauro93l@gmail.com; s=20260723; h=from:subject:message-id; bh=ZqR+kBluZPixeTfsfJROnu+T58yKuEh1lvssMTsUMXE=; b=KaoNvGcVvxw67Ak+Z5IlQgcCJH3mFP5FP8s8Nnxks+X59Ia3EYz6FLLYLGCZ7fVGvD4+JLtvo j016SYa4tnhChZcakBO5BTxuYQXIxCXDT6uK+PD3f8CMGyN1AqeXRIy X-Developer-Key: i=famlauro93l@gmail.com; a=ed25519; pk=OAJlcD69ugQCl99Vy6w+Aeu+ZUb1IVGcz1Ijxo6Ch78= X-Endpoint-Received: by B4 Relay for famlauro93l@gmail.com/20260723 with auth_id=892 X-Original-From: Luca Lauro X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: famlauro93l@gmail.com Sender: "barebox" X-Spamd-Result: default: False [-6.91 / 15.00]; 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NEURAL_HAM(-0.00)[-1.000]; ASN(0.00)[asn:7247, ipnet:2607:7c80:54::/48, country:US]; REPLYTO_DOM_NEQ_TO_DOM(0.00)[]; FORGED_SENDER_MAILLIST(0.00)[]; DKIM_TRACE(0.00)[lists.infradead.org:+,kernel.org:+]; RCPT_COUNT_THREE(0.00)[3]; HAS_REPLYTO(0.00)[famlauro93l@gmail.com] X-Rspamd-Action: no action X-Rspamd-Queue-Id: D688A202015 X-Rspamd-Server: mx1 X-Stat-Signature: 5irajjunof14qk4hn5csodqpij153jp3 From: Luca Lauro --- arch/arm/boards/netgear-rn102/lowlevel.c | 49 ++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/arch/arm/boards/netgear-rn102/lowlevel.c b/arch/arm/boards/netgear-rn102/lowlevel.c new file mode 100644 index 0000000000..11130eabbc --- /dev/null +++ b/arch/arm/boards/netgear-rn102/lowlevel.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include + +extern char __dtb_armada_370_rn102_bb_start[]; + +#define INTERNAL_REG_BASE_ADDR 0x20080 + +static __always_inline void mvebu_remap_registers(void) +{ + void __iomem *base = mvebu_get_initial_int_reg_base(); + + writel(MVEBU_REMAP_INT_REG_BASE, base + INTERNAL_REG_BASE_ADDR); +} + +static unsigned long armada_370_xp_memory_find(void) +{ + unsigned long mem_size = 0; + + for (int cs = 0; cs < 4; cs++) { + u32 ctrl = readl(ARMADA_370_XP_SDRAM_BASE + DDR_SIZE_CSn(cs)); + + /* Skip non-enabled CS */ + if ((ctrl & DDR_SIZE_ENABLED) != DDR_SIZE_ENABLED) + continue; + + mem_size += (ctrl | ~DDR_SIZE_MASK) + 1; + } + + return mem_size; +} + +ENTRY_FUNCTION_MVEBU(start_netgear_rn102, r0, r1, r2) +{ + void *fdt; + + arm_cpu_lowlevel_init(); + + fdt = __dtb_armada_370_rn102_bb_start + + get_runtime_offset(); + + mvebu_remap_registers(); + barebox_arm_entry(0, armada_370_xp_memory_find(), fdt); + // armada_370_xp_barebox_entry(fdt); +} -- 2.47.3