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Fri, 29 Mar 2024 22:05:22 -0700 (PDT) Received: from localhost.localdomain ([75.28.21.198]) by smtp.gmail.com with ESMTPSA id on7-20020a0568715a0700b0022a73f32f11sm1427634oac.32.2024.03.29.22.05.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Mar 2024 22:05:21 -0700 (PDT) From: Chris Morgan To: u-boot@lists.denx.de Cc: eugen.hristev@collabora.com, kever.yang@rock-chips.com, xypron.glpk@gmx.de, cym@rock-chips.com, philipp.tomsich@vrull.eu, sjg@chromium.org, jonas@kwiboo.se, trini@konsulko.com, Chris Morgan Subject: [RFC 1/2] rockchip: sdram: Allow board/soc specific RAM bank logic Date: Sat, 30 Mar 2024 00:05:14 -0500 Message-Id: <20240330050515.470025-2-macroalpha82@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240330050515.470025-1-macroalpha82@gmail.com> References: <20240330050515.470025-1-macroalpha82@gmail.com> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean From: Chris Morgan Allow individual boards or SoCs to alter the RAM bank addition logic by defining a __weak function that these boards can then override if needed. In the event this function fails, fallback to the default detection logic. Signed-off-by: Chris Morgan --- arch/arm/mach-rockchip/sdram.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c index 0d9a0aef6f..53aa19feca 100644 --- a/arch/arm/mach-rockchip/sdram.c +++ b/arch/arm/mach-rockchip/sdram.c @@ -35,11 +35,18 @@ struct tos_parameter_t { s64 reserve[8]; }; +__weak int rk_get_ram_banks(void) +{ + return -EINVAL; +} + int dram_init_banksize(void) { size_t ram_top = (unsigned long)(gd->ram_size + CFG_SYS_SDRAM_BASE); size_t top = min((unsigned long)ram_top, (unsigned long)(gd->ram_top)); + if (!rk_get_ram_banks()) + return 0; #ifdef CONFIG_ARM64 /* Reserve 0x200000 for ATF bl31 */ gd->bd->bi_dram[0].start = 0x200000;