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| author | Raptor Engineering Development Team <support@raptorengineering.com> | 2018-01-22 16:23:11 -0600 |
|---|---|---|
| committer | Raptor Engineering Development Team <support@raptorengineering.com> | 2018-05-30 16:37:04 -0500 |
| commit | 7da47856e74e8357dc14e9280493fa22060a2d93 (patch) | |
| tree | 64807027410959abd5dd7ff599d02629da145cba | |
| parent | ac8f6b13c7c1346b2b95952eee8d1ada8dfcba01 (diff) | |
| download | talos-skiboot-7da47856e74e8357dc14e9280493fa22060a2d93.tar.gz talos-skiboot-7da47856e74e8357dc14e9280493fa22060a2d93.zip | |
Signal skiboot completion to BMC when done
| -rw-r--r-- | core/init.c | 10 | ||||
| -rw-r--r-- | include/ast.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/core/init.c b/core/init.c index 3b887a24..b73b709a 100644 --- a/core/init.c +++ b/core/init.c @@ -52,6 +52,7 @@ #include <imc.h> #include <dts.h> #include <sbe-p9.h> +#include <ast.h> enum proc_gen proc_gen; unsigned int pcie_max_link_speed; @@ -571,6 +572,15 @@ void __noreturn load_and_boot_kernel(bool is_reboot) stdoutp = dt_prop_get_def(dt_chosen, "linux,stdout-path", NULL); prlog(PR_DEBUG, "INIT: stdout-path: %s\n", stdoutp ? stdoutp : ""); + /* Indicate skiboot done */ + /* HACK + * Ideally we'd update CFAM 0x283c with a new ISTEP (e.g. 22,0) + * here, but skiboot doesn't seem to have any existing methods + * to access the scratchpad data over FSI. Instead, we use BMC + * LPC scratch register 0x60 bit 2 (OEM1) to indicate skiboot + * has completed execution. + */ + ast_ahb_writel(ast_ahb_readl(LPC_BTIMSR) | (0x1 << 2), LPC_BTIMSR); printf("INIT: Starting kernel at 0x%llx, fdt at %p %u bytes\n", kernel_entry, fdt, fdt_totalsize(fdt)); diff --git a/include/ast.h b/include/ast.h index 414ff6a3..50e7dbef 100644 --- a/include/ast.h +++ b/include/ast.h @@ -36,6 +36,7 @@ /* LPC registers */ #define LPC_BASE 0x1e789000 +#define LPC_BTIMSR (LPC_BASE + 0x60) #define LPC_HICR6 (LPC_BASE + 0x80) #define LPC_HICR7 (LPC_BASE + 0x88) #define LPC_HICR8 (LPC_BASE + 0x8c) |
