rockchip: add px30 architecture core

Add core architecture code to support the px30 soc.
This includes a separate tpl board file due to very limited
sram size as well as a non-dm sdram driver, as this also has
to fit into the tiny sram.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/px30-board-tpl.c b/arch/arm/mach-rockchip/px30-board-tpl.c
new file mode 100644
index 0000000000..8c8976f61c
--- /dev/null
+++ b/arch/arm/mach-rockchip/px30-board-tpl.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <dm.h>
+#include <ram.h>
+#include <spl.h>
+#include <version.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/bootrom.h>
+#include <asm/arch-rockchip/sdram_px30.h>
+
+#define TIMER_LOAD_COUNT0	0x00
+#define TIMER_LOAD_COUNT1	0x04
+#define TIMER_CUR_VALUE0	0x08
+#define TIMER_CUR_VALUE1	0x0c
+#define TIMER_CONTROL_REG	0x10
+
+#define TIMER_EN	0x1
+#define	TIMER_FMODE	(0 << 1)
+#define	TIMER_RMODE	(1 << 1)
+
+void secure_timer_init(void)
+{
+	writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
+	writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_LOAD_COUNT0);
+	writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_LOAD_COUNT1);
+	writel(TIMER_EN | TIMER_FMODE,
+	       CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
+}
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+
+#ifdef CONFIG_DEBUG_UART
+	debug_uart_init();
+	/*
+	 * Debug UART can be used from here if required:
+	 *
+	 * debug_uart_init();
+	 * printch('a');
+	 * printhex8(0x1234);
+	 * printascii("string");
+	 */
+	printascii("U-Boot TPL board init\n");
+#endif
+
+	secure_timer_init();
+	ret = sdram_init();
+	if (ret)
+		printascii("sdram_init failed\n");
+
+	/* return to maskrom */
+	back_to_bootrom(BROM_BOOT_NEXTSTAGE);
+}