From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 2/2] ARM: i.MX6: Sabrelite: Add PBL console support
Date: Wed, 14 Sep 2016 10:21:30 +0200 [thread overview]
Message-ID: <1473841290-3935-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1473841290-3935-1-git-send-email-s.hauer@pengutronix.de>
Add PBL console support to allow for better debugging.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/boards/freescale-mx6-sabrelite/lowlevel.c | 57 +++++++++++++++++++---
1 file changed, 49 insertions(+), 8 deletions(-)
diff --git a/arch/arm/boards/freescale-mx6-sabrelite/lowlevel.c b/arch/arm/boards/freescale-mx6-sabrelite/lowlevel.c
index abfb77a..3b51e01 100644
--- a/arch/arm/boards/freescale-mx6-sabrelite/lowlevel.c
+++ b/arch/arm/boards/freescale-mx6-sabrelite/lowlevel.c
@@ -3,29 +3,70 @@
#include <mach/generic.h>
#include <asm/barebox-arm-head.h>
#include <asm/barebox-arm.h>
+#include <mach/imx6-regs.h>
+#include <io.h>
+#include <mach/debug_ll.h>
+#include <mach/esdctl.h>
+#include <asm/cache.h>
extern char __dtb_imx6q_sabrelite_start[];
-ENTRY_FUNCTION(start_imx6q_sabrelite, r0, r1, r2)
+static noinline void imx6q_sabrelite_start(void)
{
- void *fdt;
+ void __iomem *iomuxbase = IOMEM(MX6_IOMUXC_BASE_ADDR);
+ void __iomem *uart = IOMEM(MX6_UART2_BASE_ADDR);
+
+ writel(0x4, iomuxbase + 0x0bc);
+
+ imx6_ungate_all_peripherals();
+ imx6_uart_setup(uart);
+ pbl_set_putc(imx_uart_putc, uart);
+ pr_debug("Freescale i.MX6q SabreLite\n");
+
+ imx6q_barebox_entry(__dtb_imx6q_sabrelite_start);
+}
+
+ENTRY_FUNCTION(start_imx6q_sabrelite, r0, r1, r2)
+{
imx6_cpu_lowlevel_init();
- fdt = __dtb_imx6q_sabrelite_start - get_runtime_offset();
+ arm_early_mmu_cache_invalidate();
+
+ relocate_to_current_adr();
+ setup_c();
+ barrier();
- barebox_arm_entry(0x10000000, SZ_1G, fdt);
+ imx6q_sabrelite_start();
}
extern char __dtb_imx6dl_sabrelite_start[];
-ENTRY_FUNCTION(start_imx6dl_sabrelite, r0, r1, r2)
+static noinline void imx6dl_sabrelite_start(void)
{
- void *fdt;
+ void __iomem *iomuxbase = IOMEM(MX6_IOMUXC_BASE_ADDR);
+ void __iomem *uart = IOMEM(MX6_UART2_BASE_ADDR);
+
+ writel(0x4, iomuxbase + 0x16c);
+
+ imx6_ungate_all_peripherals();
+ imx6_uart_setup(uart);
+ pbl_set_putc(imx_uart_putc, uart);
+ pr_debug("Freescale i.MX6q SabreLite\n");
+
+ imx6q_barebox_entry(__dtb_imx6q_sabrelite_start);
+}
+
+ENTRY_FUNCTION(start_imx6dl_sabrelite, r0, r1, r2)
+{
imx6_cpu_lowlevel_init();
- fdt = __dtb_imx6dl_sabrelite_start - get_runtime_offset();
+ arm_early_mmu_cache_invalidate();
+
+ relocate_to_current_adr();
+ setup_c();
+ barrier();
- barebox_arm_entry(0x10000000, SZ_1G, fdt);
+ imx6dl_sabrelite_start();
}
--
2.8.1
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next prev parent reply other threads:[~2016-09-14 8:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 8:21 [PATCH 1/2] pbl: console: Make it work with multiple setup_c() Sascha Hauer
2016-09-14 8:21 ` Sascha Hauer [this message]
2016-09-14 17:41 ` Trent Piepho
2016-09-15 7:25 ` Sascha Hauer
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