| Message ID | 20231027144304.1002307-5-patrice.chotard@foss.st.com |
|---|---|
| State | Accepted |
| Commit | 75ba0fd570c850b92dfd43d873bab877b4a1b73b |
| Delegated to: | Patrick Delaunay |
| Headers | show |
| Series | Add STM32MP2 SoCs and STM32MP257F-EV board support | expand |
Hi, On 10/27/23 16:42, Patrice Chotard wrote: > Limit DDR usage under 4GB boundary on STM32MP regardless of > memory size declared in device tree. > > Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> > --- > > arch/arm/mach-stm32mp/dram_init.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c > index cb35ed60ca1..fb1208fc5d5 100644 > --- a/arch/arm/mach-stm32mp/dram_init.c > +++ b/arch/arm/mach-stm32mp/dram_init.c > @@ -52,9 +52,15 @@ phys_addr_t board_get_usable_ram_top(phys_size_t total_size) > if (!total_size) > return gd->ram_top; > > + /* > + * make sure U-Boot uses address space below 4GB boundaries even > + * if the effective available memory is bigger > + */ > + gd->ram_top = clamp_val(gd->ram_top, 0, SZ_4G - 1); > + > /* found enough not-reserved memory to relocated U-Boot */ > lmb_init(&lmb); > - lmb_add(&lmb, gd->ram_base, get_effective_memsize()); > + lmb_add(&lmb, gd->ram_base, gd->ram_top - gd->ram_base); > boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob); > /* add 8M for reserved memory for display, fdt, gd,... */ > size = ALIGN(SZ_8M + CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE), Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Thanks Patrick
On 11/9/23 10:13, Patrick DELAUNAY wrote: > Hi, > > On 10/27/23 16:42, Patrice Chotard wrote: >> Limit DDR usage under 4GB boundary on STM32MP regardless of >> memory size declared in device tree. >> >> Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> >> --- >> >> arch/arm/mach-stm32mp/dram_init.c | 8 +++++++- >> 1 file changed, 7 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c >> index cb35ed60ca1..fb1208fc5d5 100644 >> --- a/arch/arm/mach-stm32mp/dram_init.c >> +++ b/arch/arm/mach-stm32mp/dram_init.c >> @@ -52,9 +52,15 @@ phys_addr_t board_get_usable_ram_top(phys_size_t total_size) >> if (!total_size) >> return gd->ram_top; >> + /* >> + * make sure U-Boot uses address space below 4GB boundaries even >> + * if the effective available memory is bigger >> + */ >> + gd->ram_top = clamp_val(gd->ram_top, 0, SZ_4G - 1); >> + >> /* found enough not-reserved memory to relocated U-Boot */ >> lmb_init(&lmb); >> - lmb_add(&lmb, gd->ram_base, get_effective_memsize()); >> + lmb_add(&lmb, gd->ram_base, gd->ram_top - gd->ram_base); >> boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob); >> /* add 8M for reserved memory for display, fdt, gd,... */ >> size = ALIGN(SZ_8M + CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE), > > > Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> > > Thanks > Patrick > Applied to u-boot-stm32/next Thanks Patrice
diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c index cb35ed60ca1..fb1208fc5d5 100644 --- a/arch/arm/mach-stm32mp/dram_init.c +++ b/arch/arm/mach-stm32mp/dram_init.c @@ -52,9 +52,15 @@ phys_addr_t board_get_usable_ram_top(phys_size_t total_size) if (!total_size) return gd->ram_top; + /* + * make sure U-Boot uses address space below 4GB boundaries even + * if the effective available memory is bigger + */ + gd->ram_top = clamp_val(gd->ram_top, 0, SZ_4G - 1); + /* found enough not-reserved memory to relocated U-Boot */ lmb_init(&lmb); - lmb_add(&lmb, gd->ram_base, get_effective_memsize()); + lmb_add(&lmb, gd->ram_base, gd->ram_top - gd->ram_base); boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob); /* add 8M for reserved memory for display, fdt, gd,... */ size = ALIGN(SZ_8M + CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE),
Limit DDR usage under 4GB boundary on STM32MP regardless of memory size declared in device tree. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> --- arch/arm/mach-stm32mp/dram_init.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)