| Message ID | 20241025121547.181633-3-sughosh.ganu@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add generic function for computing ram_top | expand |
On 10/25/24 14:15, Sughosh Ganu wrote: > Use the get_mem_top function to compute the value of ram_top. This was > earlier done through LMB API's, which are no longer available till > after relocation. Use get_mem_top() instead to compute the ram_top > value. > > Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> > --- > board/xilinx/common/board.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c > index 38dd80533fa..e14ed2cff00 100644 > --- a/board/xilinx/common/board.c > +++ b/board/xilinx/common/board.c > @@ -19,6 +19,7 @@ > #include <i2c.h> > #include <linux/sizes.h> > #include <malloc.h> > +#include <memtop.h> > #include <mtd_node.h> > #include "board.h" > #include <dm.h> > @@ -676,3 +677,27 @@ int ft_board_setup(void *blob, struct bd_info *bd) > return 0; > } > #endif > + > +#ifndef MMU_SECTION_SIZE > +#define MMU_SECTION_SIZE (1 * 1024 * 1024) > +#endif > + > +phys_addr_t board_get_usable_ram_top(phys_size_t total_size) > +{ > + phys_size_t size; > + phys_addr_t reg; > + > + if (!total_size) > + return gd->ram_top; > + > + if (!IS_ALIGNED((ulong)gd->fdt_blob, 0x8)) > + panic("Not 64bit aligned DT location: %p\n", gd->fdt_blob); > + > + size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE); > + reg = get_mem_top(gd->ram_base, gd->ram_size, size, > + (void *)gd->fdt_blob); > + if (!reg) > + reg = gd->ram_top - size; > + > + return reg + size; > +} Reviewed-by: Michal Simek <michal.simek@amd.com> Thanks, Michal
diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c index 38dd80533fa..e14ed2cff00 100644 --- a/board/xilinx/common/board.c +++ b/board/xilinx/common/board.c @@ -19,6 +19,7 @@ #include <i2c.h> #include <linux/sizes.h> #include <malloc.h> +#include <memtop.h> #include <mtd_node.h> #include "board.h" #include <dm.h> @@ -676,3 +677,27 @@ int ft_board_setup(void *blob, struct bd_info *bd) return 0; } #endif + +#ifndef MMU_SECTION_SIZE +#define MMU_SECTION_SIZE (1 * 1024 * 1024) +#endif + +phys_addr_t board_get_usable_ram_top(phys_size_t total_size) +{ + phys_size_t size; + phys_addr_t reg; + + if (!total_size) + return gd->ram_top; + + if (!IS_ALIGNED((ulong)gd->fdt_blob, 0x8)) + panic("Not 64bit aligned DT location: %p\n", gd->fdt_blob); + + size = ALIGN(CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE); + reg = get_mem_top(gd->ram_base, gd->ram_size, size, + (void *)gd->fdt_blob); + if (!reg) + reg = gd->ram_top - size; + + return reg + size; +}
Use the get_mem_top function to compute the value of ram_top. This was earlier done through LMB API's, which are no longer available till after relocation. Use get_mem_top() instead to compute the ram_top value. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> --- board/xilinx/common/board.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)