From: Ahmad Fatoum <a.fatoum@barebox.org>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@barebox.org>
Subject: [PATCH 1/2] debug_ll: pl011: add PBL console helper
Date: Mon, 12 Jan 2026 09:56:39 +0100 [thread overview]
Message-ID: <20260112085709.2953004-1-a.fatoum@barebox.org> (raw)
For use with pbl_set_putc, define a helper for PL011, like we already do
for NS16550.
Signed-off-by: Ahmad Fatoum <a.fatoum@barebox.org>
---
include/debug_ll/pl011.h | 29 ++++++++++++++++++++---------
1 file changed, 20 insertions(+), 9 deletions(-)
diff --git a/include/debug_ll/pl011.h b/include/debug_ll/pl011.h
index 12f9ce1564c5..aeec456f2006 100644
--- a/include/debug_ll/pl011.h
+++ b/include/debug_ll/pl011.h
@@ -3,25 +3,36 @@
#ifndef __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__
#define __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__
+#include <io.h>
+#include <linux/amba/serial.h>
+
+static inline void debug_ll_pl011_putc(void __iomem *base, int c)
+{
+ /* Wait until there is space in the FIFO */
+ while (readl(base + UART01x_FR) & UART01x_FR_TXFF)
+ ;
+
+ /* Send the character */
+ writel(c, base + UART01x_DR);
+}
+
+#ifdef CONFIG_DEBUG_LL
+
#ifndef DEBUG_LL_UART_ADDR
#error DEBUG_LL_UART_ADDR is undefined!
#endif
-#include <io.h>
-#include <linux/amba/serial.h>
-
static inline void PUTC_LL(char c)
{
- /* Wait until there is space in the FIFO */
- while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF)
- ;
+ void __iomem *base = IOMEM(DEBUG_LL_UART_ADDR);
- /* Send the character */
- writel(c, DEBUG_LL_UART_ADDR + UART01x_DR);
+ debug_ll_pl011_putc(base, c);
/* Wait to make sure it hits the line, in case we die too soon. */
- while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF)
+ while (readl(base + UART01x_FR) & UART01x_FR_TXFF)
;
}
+#endif
+
#endif /* __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__ */
--
2.47.3
next reply other threads:[~2026-01-12 8:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-12 8:56 Ahmad Fatoum [this message]
2026-01-12 8:56 ` [PATCH 2/2] ARM: cpu: setupc: implement 32-bit relocate_to_adr_full Ahmad Fatoum
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