From: Marco Felsch <m.felsch@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] ARM: i.MX: esdctl: add force_split option to add_mem
Date: Thu, 31 Aug 2023 15:05:48 +0200 [thread overview]
Message-ID: <20230831130549.3357673-1-m.felsch@pengutronix.de> (raw)
Currently add_mem() tries to merge the memory banks if they are
continuous. Add a option to avoid this merge which is not always useful
e.g. for devices with memory > 4G.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
---
arch/arm/mach-imx/esdctl.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-imx/esdctl.c b/arch/arm/mach-imx/esdctl.c
index 1798ad48e50a..54c62c47338e 100644
--- a/arch/arm/mach-imx/esdctl.c
+++ b/arch/arm/mach-imx/esdctl.c
@@ -183,14 +183,14 @@ static inline u64 __imx6_mmdc_sdram_size(void __iomem *mmdcbase, int cs)
}
static int add_mem(unsigned long base0, unsigned long size0,
- unsigned long base1, unsigned long size1)
+ unsigned long base1, unsigned long size1, bool force_split)
{
int ret0 = 0, ret1 = 0;
debug("%s: cs0 base: 0x%08lx cs0 size: 0x%08lx\n", __func__, base0, size0);
debug("%s: cs1 base: 0x%08lx cs1 size: 0x%08lx\n", __func__, base1, size1);
- if (base0 + size0 == base1 && size1 > 0) {
+ if (!force_split && base0 + size0 == base1 && size1 > 0) {
/*
* concatenate both chip selects to a single bank
*/
@@ -229,13 +229,13 @@ static inline void imx_esdctl_v2_disable_default(void __iomem *esdctlbase)
static int imx_esdctl_v1_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
{
return add_mem(data->base0, imx_v1_sdram_size(esdctlbase, 0),
- data->base1, imx_v1_sdram_size(esdctlbase, 1));
+ data->base1, imx_v1_sdram_size(esdctlbase, 1), false);
}
static int imx_esdctl_v2_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
{
return add_mem(data->base0, imx_v2_sdram_size(esdctlbase, 0),
- data->base1, imx_v2_sdram_size(esdctlbase, 1));
+ data->base1, imx_v2_sdram_size(esdctlbase, 1), false);
}
static int imx_esdctl_v2_bug_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
@@ -243,19 +243,19 @@ static int imx_esdctl_v2_bug_add_mem(void *esdctlbase, struct imx_esdctl_data *d
imx_esdctl_v2_disable_default(esdctlbase);
return add_mem(data->base0, imx_v2_sdram_size(esdctlbase, 0),
- data->base1, imx_v2_sdram_size(esdctlbase, 1));
+ data->base1, imx_v2_sdram_size(esdctlbase, 1), false);
}
static int imx_esdctl_v3_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
{
return add_mem(data->base0, imx_v3_sdram_size(esdctlbase, 0),
- data->base1, imx_v3_sdram_size(esdctlbase, 1));
+ data->base1, imx_v3_sdram_size(esdctlbase, 1), false);
}
static int imx_esdctl_v4_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
{
return add_mem(data->base0, imx_v4_sdram_size(esdctlbase, 0),
- data->base1, imx_v4_sdram_size(esdctlbase, 1));
+ data->base1, imx_v4_sdram_size(esdctlbase, 1), false);
}
/*
--
2.39.2
next reply other threads:[~2023-08-31 13:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-31 13:05 Marco Felsch [this message]
2023-08-31 13:05 ` [PATCH 2/2] ARM: i.MX8M: esdctl: split memory banks for devices with >4G Marco Felsch
2023-08-31 13:58 ` Lucas Stach
2023-08-31 14:30 ` Marco Felsch
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