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>
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 0000000..8c8976f
--- /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);
+}