[U-Boot] [PATCH v6 1/6] ls2080: Exit dpaa only right before exiting U-Boot
Alexander Graf
agraf at suse.de
Wed Oct 19 16:31:12 CEST 2016
On ls2080 we have a separate network fabric component which we need to
shut down before we enter Linux (or any other OS). Along with that also
comes configuration of the fabric using a description file.
Today we always stop and configure the fabric in the boot script and
(again) exit it on device tree generation. This works ok for the normal
booti case, but with bootefi the payload we're running may still want to
access the network.
So let's add a new fsl_mc command that defers configuration and stopping
the hardware to when we actually exit U-Boot, so that we can still use
the fabric from an EFI payload.
For existing boot scripts, nothing should change with this patch.
Signed-off-by: Alexander Graf <agraf at suse.de>
Reviewed-by: York Sun <york.sun at nxp.com>
---
v3 -> v4:
- Move code into generic quiesce weak function
- Exit device for real when going to Linux
- Only apply DPL if we have something to apply
---
arch/arm/include/asm/u-boot-arm.h | 1 +
arch/arm/lib/bootm.c | 7 +++++++
board/freescale/ls2080a/ls2080a.c | 6 +++++-
board/freescale/ls2080aqds/ls2080aqds.c | 11 +++++------
board/freescale/ls2080ardb/ls2080ardb.c | 11 +++++------
drivers/net/fsl-mc/mc.c | 24 ++++++++++++++++++++++--
lib/efi_loader/efi_boottime.c | 2 ++
7 files changed, 47 insertions(+), 15 deletions(-)
diff --git a/arch/arm/include/asm/u-boot-arm.h b/arch/arm/include/asm/u-boot-arm.h
index 414042d..023daf5 100644
--- a/arch/arm/include/asm/u-boot-arm.h
+++ b/arch/arm/include/asm/u-boot-arm.h
@@ -37,6 +37,7 @@ int arch_early_init_r(void);
/* board/.../... */
int board_init(void);
void dram_init_banksize (void);
+void board_quiesce_devices(void);
/* cpu/.../interrupt.c */
int arch_interrupt_init (void);
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 53c3141..dedcd1e 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -64,6 +64,10 @@ void arch_lmb_reserve(struct lmb *lmb)
gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - sp);
}
+__weak void board_quiesce_devices(void)
+{
+}
+
/**
* announce_and_cleanup() - Print message and prepare for kernel boot
*
@@ -84,6 +88,9 @@ static void announce_and_cleanup(int fake)
#ifdef CONFIG_USB_DEVICE
udc_disconnect();
#endif
+
+ board_quiesce_devices();
+
cleanup_before_linux();
}
diff --git a/board/freescale/ls2080a/ls2080a.c b/board/freescale/ls2080a/ls2080a.c
index d0a88d4..4f9b9c8 100644
--- a/board/freescale/ls2080a/ls2080a.c
+++ b/board/freescale/ls2080a/ls2080a.c
@@ -102,6 +102,11 @@ void fdt_fixup_board_enet(void *fdt)
else
fdt_status_fail(fdt, offset);
}
+
+void board_quiesce_devices(void)
+{
+ fsl_mc_ldpaa_exit(gd->bd);
+}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
@@ -122,7 +127,6 @@ int ft_board_setup(void *blob, bd_t *bd)
#ifdef CONFIG_FSL_MC_ENET
fdt_fixup_board_enet(blob);
- fsl_mc_ldpaa_exit(bd);
#endif
return 0;
diff --git a/board/freescale/ls2080aqds/ls2080aqds.c b/board/freescale/ls2080aqds/ls2080aqds.c
index d07ca18..73a61fd 100644
--- a/board/freescale/ls2080aqds/ls2080aqds.c
+++ b/board/freescale/ls2080aqds/ls2080aqds.c
@@ -292,14 +292,16 @@ void fdt_fixup_board_enet(void *fdt)
else
fdt_status_fail(fdt, offset);
}
+
+void board_quiesce_devices(void)
+{
+ fsl_mc_ldpaa_exit(gd->bd);
+}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, bd_t *bd)
{
-#ifdef CONFIG_FSL_MC_ENET
- int err;
-#endif
u64 base[CONFIG_NR_DRAM_BANKS];
u64 size[CONFIG_NR_DRAM_BANKS];
@@ -317,9 +319,6 @@ int ft_board_setup(void *blob, bd_t *bd)
#ifdef CONFIG_FSL_MC_ENET
fdt_fixup_board_enet(blob);
- err = fsl_mc_ldpaa_exit(bd);
- if (err)
- return err;
#endif
return 0;
diff --git a/board/freescale/ls2080ardb/ls2080ardb.c b/board/freescale/ls2080ardb/ls2080ardb.c
index 83d9e7e..fab44b9 100644
--- a/board/freescale/ls2080ardb/ls2080ardb.c
+++ b/board/freescale/ls2080ardb/ls2080ardb.c
@@ -256,14 +256,16 @@ void fdt_fixup_board_enet(void *fdt)
else
fdt_status_fail(fdt, offset);
}
+
+void board_quiesce_devices(void)
+{
+ fsl_mc_ldpaa_exit(gd->bd);
+}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, bd_t *bd)
{
-#ifdef CONFIG_FSL_MC_ENET
- int err;
-#endif
u64 base[CONFIG_NR_DRAM_BANKS];
u64 size[CONFIG_NR_DRAM_BANKS];
@@ -281,9 +283,6 @@ int ft_board_setup(void *blob, bd_t *bd)
#ifdef CONFIG_FSL_MC_ENET
fdt_fixup_board_enet(blob);
- err = fsl_mc_ldpaa_exit(bd);
- if (err)
- return err;
#endif
return 0;
diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index 1811b0f..46b8a6b 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -40,6 +40,7 @@ int child_dprc_id;
struct fsl_dpbp_obj *dflt_dpbp = NULL;
struct fsl_dpio_obj *dflt_dpio = NULL;
struct fsl_dpni_obj *dflt_dpni = NULL;
+static u64 mc_lazy_dpl_addr;
#ifdef DEBUG
void dump_ram_words(const char *title, void *addr)
@@ -572,6 +573,9 @@ int mc_apply_dpl(u64 mc_dpl_addr)
u64 mc_ram_addr = mc_get_dram_addr();
size_t mc_ram_size = mc_get_dram_block_size();
+ if (!mc_dpl_addr)
+ return -1;
+
error = load_mc_dpl(mc_ram_addr, mc_ram_size, mc_dpl_addr);
if (error != 0)
return error;
@@ -1156,6 +1160,11 @@ int fsl_mc_ldpaa_exit(bd_t *bd)
{
int err = 0;
+ if (bd && mc_lazy_dpl_addr && !fsl_mc_ldpaa_exit(NULL)) {
+ mc_apply_dpl(mc_lazy_dpl_addr);
+ mc_lazy_dpl_addr = 0;
+ }
+
/* MC is not loaded intentionally, So return success. */
if (bd && get_mc_boot_status() != 0)
return 0;
@@ -1259,6 +1268,7 @@ static int do_fsl_mc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}
break;
+ case 'l':
case 'a': {
u64 mc_dpl_addr;
@@ -1279,8 +1289,17 @@ static int do_fsl_mc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return -ENODEV;
}
- if (!fsl_mc_ldpaa_exit(NULL))
- err = mc_apply_dpl(mc_dpl_addr);
+ if (argv[1][0] == 'l') {
+ /*
+ * We will do the actual dpaa exit and dpl apply
+ * later from announce_and_cleanup().
+ */
+ mc_lazy_dpl_addr = mc_dpl_addr;
+ } else {
+ /* The user wants it applied now */
+ if (!fsl_mc_ldpaa_exit(NULL))
+ err = mc_apply_dpl(mc_dpl_addr);
+ }
break;
}
default:
@@ -1298,5 +1317,6 @@ U_BOOT_CMD(
"DPAA2 command to manage Management Complex (MC)",
"start mc [FW_addr] [DPC_addr] - Start Management Complex\n"
"fsl_mc apply DPL [DPL_addr] - Apply DPL file\n"
+ "fsl_mc lazyapply DPL [DPL_addr] - Apply DPL file on exit\n"
"fsl_mc start aiop [FW_addr] - Start AIOP\n"
);
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 1fdddf4..51080cb 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -538,6 +538,8 @@ static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
{
EFI_ENTRY("%p, %ld", image_handle, map_key);
+ board_quiesce_devices();
+
/* Fix up caches for EFI payloads if necessary */
efi_exit_caches();
--
1.8.5.6
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