From b3d9a8b1857878fd72bf5385d91585fbafe516d6 Mon Sep 17 00:00:00 2001
From: Trevor Woerner <twoerner@gmail.com>
Date: Wed, 6 May 2020 08:02:36 -0400
Subject: arm: lpc32xx: move SoC to mach-lpc32xx

Following the example of most other SoCs in arch/$(ARCH)/cpu/$(CPU)/$(SOC)
move the lpc32xx code from arch/arm/cpu/arm926ejs/lpc32xx to
arch/arm/mach-lpc32xx.

Following the checklist from
commit 01f14456306c ("ARM: prepare for moving SoC sources into mach-*"):

    [1] move files from arch/arm/cpu/arm926ejs/lpc32xx to arch/arm/mach-lpx32xx
    [2] add machine entry to arch/arm/Makefile
    [3] remove "obj-y += ..." from arch/arm/cpu/arm926ejs/Makefile
    [4] fix the Kconfig file path in arch/arm/Kconfig
    [5] (no MAINTAINERS update)

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
---
 arch/arm/mach-lpc32xx/cpu.c | 78 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 arch/arm/mach-lpc32xx/cpu.c

(limited to 'arch/arm/mach-lpc32xx/cpu.c')

diff --git a/arch/arm/mach-lpc32xx/cpu.c b/arch/arm/mach-lpc32xx/cpu.c
new file mode 100644
index 0000000000..4c59a44f7e
--- /dev/null
+++ b/arch/arm/mach-lpc32xx/cpu.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2011-2015 by Vladimir Zapolskiy <vz@mleia.com>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <netdev.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/wdt.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+
+static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
+static struct wdt_regs  *wdt = (struct wdt_regs *)WDT_BASE;
+
+void reset_cpu(ulong addr)
+{
+	/* Enable watchdog clock */
+	setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
+
+	/* To be compatible with the original U-Boot code:
+	 * addr: - 0: perform hard reset.
+	 *       - !=0: perform a soft reset; i.e. "RESOUT_N" not asserted). */
+	if (addr == 0) {
+		/* Reset pulse length is 13005 peripheral clock frames */
+		writel(13000, &wdt->pulse);
+
+		/* Force WDOG_RESET2 and RESOUT_N signal active */
+		writel(WDTIM_MCTRL_RESFRC2 | WDTIM_MCTRL_RESFRC1
+		       | WDTIM_MCTRL_M_RES2, &wdt->mctrl);
+	} else {
+		/* Force match output active */
+		writel(0x01, &wdt->emr);
+
+		/* Internal reset on match output (no pulse on "RESOUT_N") */
+		writel(WDTIM_MCTRL_M_RES1, &wdt->mctrl);
+	}
+
+	while (1)
+		/* NOP */;
+}
+
+#if defined(CONFIG_ARCH_CPU_INIT)
+int arch_cpu_init(void)
+{
+	/*
+	 * It might be necessary to flush data cache, if U-Boot is loaded
+	 * from kickstart bootloader, e.g. from S1L loader
+	 */
+	flush_dcache_all();
+
+	return 0;
+}
+#else
+#error "You have to select CONFIG_ARCH_CPU_INIT"
+#endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+	printf("CPU:   NXP LPC32XX\n");
+	printf("CPU clock:        %uMHz\n", get_hclk_pll_rate() / 1000000);
+	printf("AHB bus clock:    %uMHz\n", get_hclk_clk_rate() / 1000000);
+	printf("Peripheral clock: %uMHz\n", get_periph_clk_rate() / 1000000);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_LPC32XX_ETH
+int cpu_eth_init(bd_t *bis)
+{
+	lpc32xx_eth_initialize(bis);
+	return 0;
+}
+#endif
-- 
cgit