From: Bhupesh Sharma bhupesh.sharma@freescale.com
This patch allows u-boot to expose the complete DDR region(s) to Linux (after subtracting the memory hidden via MEM_TOP_HIDE mechanism).
This allows the u-boot to support the 48-bit VA support provided by ARM64 Linux in flavors 3.18 and above, by passing the appropriate 'memory' DTS nodes.
Signed-off-by: Bhupesh Sharma bhupesh.sharma@freescale.com Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com --- board/freescale/ls2085a/README | 11 +++++++++++ board/freescale/ls2085a/ls2085a.c | 15 +++++++++------ board/freescale/ls2085aqds/README | 19 +++++++++++++++++++ board/freescale/ls2085aqds/ls2085aqds.c | 15 +++++++++------ board/freescale/ls2085ardb/README | 11 +++++++++++ board/freescale/ls2085ardb/ls2085ardb.c | 15 +++++++++------ 6 files changed, 68 insertions(+), 18 deletions(-)
diff --git a/board/freescale/ls2085a/README b/board/freescale/ls2085a/README index b7023e1..bc1d0bb 100644 --- a/board/freescale/ls2085a/README +++ b/board/freescale/ls2085a/README @@ -14,3 +14,14 @@ Memory map from core's view
Other addresses are either reserved, or not used directly by u-boot. This list should be updated when more addresses are used. + +Booting Linux flavors which do not support 48-bit VA (< Linux 3.18) +------------------------------------------------------------------- +One needs to use appropriate bootargs to boot Linux flavors which do +not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown +below: + +=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram + earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m + hugepages=16 mem=2048M' + diff --git a/board/freescale/ls2085a/ls2085a.c b/board/freescale/ls2085a/ls2085a.c index afb99d1..bcb99de 100644 --- a/board/freescale/ls2085a/ls2085a.c +++ b/board/freescale/ls2085a/ls2085a.c @@ -127,15 +127,18 @@ void fdt_fixup_board_enet(void *fdt) #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, bd_t *bd) { - phys_addr_t base; - phys_size_t size; + u64 base[CONFIG_NR_DRAM_BANKS]; + u64 size[CONFIG_NR_DRAM_BANKS];
ft_cpu_setup(blob, bd);
- /* limit the memory size to bank 1 until Linux can handle 40-bit PA */ - base = getenv_bootm_low(); - size = getenv_bootm_size(); - fdt_fixup_memory(blob, (u64)base, (u64)size); + /* fixup DT for the two GPP DDR banks */ + base[0] = gd->bd->bi_dram[0].start; + size[0] = gd->bd->bi_dram[0].size; + base[1] = gd->bd->bi_dram[1].start; + size[1] = gd->bd->bi_dram[1].size; + + fdt_fixup_memory_banks(blob, base, size, 2);
#ifdef CONFIG_FSL_MC_ENET fdt_fixup_board_enet(blob); diff --git a/board/freescale/ls2085aqds/README b/board/freescale/ls2085aqds/README index fb3938e..11b2e79 100644 --- a/board/freescale/ls2085aqds/README +++ b/board/freescale/ls2085aqds/README @@ -127,3 +127,22 @@ b) NOR boot c) NAND boot d) SD boot e) QSPI boot + +Environment Variables +--------------------- +- mcboottimeout: MC boot timeout in milliseconds. If this variable is not defined + the value CONFIG_SYS_LS_MC_BOOT_TIMEOUT_MS will be assumed. + +- mcmemsize: MC DRAM block size. If this variable is not defined + the value CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE will be assumed. + +Booting Linux flavors which do not support 48-bit VA (< Linux 3.18) +------------------------------------------------------------------- +One needs to use appropriate bootargs to boot Linux flavors which do +not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown +below: + +=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram + earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m + hugepages=16 mem=2048M' + diff --git a/board/freescale/ls2085aqds/ls2085aqds.c b/board/freescale/ls2085aqds/ls2085aqds.c index 5e15ab2..67b3062 100644 --- a/board/freescale/ls2085aqds/ls2085aqds.c +++ b/board/freescale/ls2085aqds/ls2085aqds.c @@ -244,15 +244,18 @@ void fdt_fixup_board_enet(void *fdt) #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, bd_t *bd) { - phys_addr_t base; - phys_size_t size; + u64 base[CONFIG_NR_DRAM_BANKS]; + u64 size[CONFIG_NR_DRAM_BANKS];
ft_cpu_setup(blob, bd);
- /* limit the memory size to bank 1 until Linux can handle 40-bit PA */ - base = getenv_bootm_low(); - size = getenv_bootm_size(); - fdt_fixup_memory(blob, (u64)base, (u64)size); + /* fixup DT for the two GPP DDR banks */ + base[0] = gd->bd->bi_dram[0].start; + size[0] = gd->bd->bi_dram[0].size; + base[1] = gd->bd->bi_dram[1].start; + size[1] = gd->bd->bi_dram[1].size; + + fdt_fixup_memory_banks(blob, base, size, 2);
#ifdef CONFIG_FSL_MC_ENET fdt_fixup_board_enet(blob); diff --git a/board/freescale/ls2085ardb/README b/board/freescale/ls2085ardb/README index cfd5185..2f18243 100644 --- a/board/freescale/ls2085ardb/README +++ b/board/freescale/ls2085ardb/README @@ -107,3 +107,14 @@ Booting Options --------------- a) NOR boot b) NAND boot + +Booting Linux flavors which do not support 48-bit VA (< Linux 3.18) +------------------------------------------------------------------- +One needs to use appropriate bootargs to boot Linux flavors which do +not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown +below: + +=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram + earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m + hugepages=16 mem=2048M' + diff --git a/board/freescale/ls2085ardb/ls2085ardb.c b/board/freescale/ls2085ardb/ls2085ardb.c index 78efa32..531ecf3 100644 --- a/board/freescale/ls2085ardb/ls2085ardb.c +++ b/board/freescale/ls2085ardb/ls2085ardb.c @@ -241,15 +241,18 @@ void fdt_fixup_board_enet(void *fdt) #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, bd_t *bd) { - phys_addr_t base; - phys_size_t size; + u64 base[CONFIG_NR_DRAM_BANKS]; + u64 size[CONFIG_NR_DRAM_BANKS];
ft_cpu_setup(blob, bd);
- /* limit the memory size to bank 1 until Linux can handle 40-bit PA */ - base = getenv_bootm_low(); - size = getenv_bootm_size(); - fdt_fixup_memory(blob, (u64)base, (u64)size); + /* fixup DT for the two GPP DDR banks */ + base[0] = gd->bd->bi_dram[0].start; + size[0] = gd->bd->bi_dram[0].size; + base[1] = gd->bd->bi_dram[1].start; + size[1] = gd->bd->bi_dram[1].size; + + fdt_fixup_memory_banks(blob, base, size, 2);
#ifdef CONFIG_FSL_MC_ENET fdt_fixup_board_enet(blob);